HTET Exam - Level 1 Prt - Parts Of Speech

Option 1, "These, Those," is the correct answer for filling in the blanks in the sentence: "_____ are the old classrooms. _____ are the new ones."

1. Explanation for Option 1:

   • "These" is used to refer to things that are near in space or time. In the context of the sentence, "These are the old classrooms," it implies that the old classrooms are nearby or being directly pointed out.
   • "Those" is used to refer to things that are farther away in space or time. In the sentence, "Those are the new ones," it suggests that the new classrooms are at a distance or being contrasted with the old ones.
   • The use of "These" and "Those" together effectively distinguishes between two sets of classrooms, one being closer or more immediate (the old ones) and the other being farther or different (the new ones).

2. Explanation for why other options are incorrect:

   • Option 2: "This, Those"

     • "This" is singular and is used to refer to a single item that is near. Since "classrooms" is plural, "This" is not appropriate for the first blank. The sentence requires a plural determiner to match the plural noun "classrooms."

   • Option 3: "These, This"

     • While "These" is correct for the first blank, "This" is incorrect for the second blank because "This" is singular. The sentence structure suggests a comparison between two groups of classrooms, both of which are plural, so "This" does not fit the context.

   • Option 4: "These, Either"

     • "Either" is used to refer to one of two options and is not suitable for the context of the sentence, which is comparing two groups of classrooms. "Either" does not convey the intended meaning of distinguishing between two sets of plural items.

In conclusion, Option 1, "These, Those," is the correct choice because it appropriately uses plural determiners to distinguish between two groups of classrooms, aligning with the context and grammatical structure of the sentence.

The correct option is 3:

The correct option is 3: scholars, scientists and leaders of opinion.
Students, we must carefully examine the sentence immediately preceding the clause in question. The text states: "...there are colleges that are more proud of the bureaucrats among their alumni than of any scholars, scientists or leaders of opinion. And these latter, understandably, are a small number." The word "latter" is a comparative term used to refer to the second of two things mentioned, or the last mentioned group in a list. In this context, the two groups being compared by the phrase "more proud... than" are (1) "bureaucrats" and (2) "scholars, scientists or leaders of opinion." Since the last group mentioned in this comparison is the one listed after "than," the term "these latter" refers directly to "scholars, scientists or leaders of opinion." The text confirms this interpretation by stating that this group is "a small number," implying that the colleges have very few celebrated alumni who are not bureaucrats.

The incorrect option is 1: clerks, doctors & engineers.
This option introduces professions (doctors & engineers) that are not part of the primary comparison set being discussed immediately before the phrase "these latter." While clerks are mentioned earlier in the passage, the phrase "these latter" is referencing the final list of categories mentioned in the direct comparison with bureaucrats, not a mix of professions mentioned in various parts of the text.

The incorrect option is 2: bureaucrats, clerks and scholars.
The term "latter" is used to distinguish the second/last group mentioned from the first group. The comparison in the text is between "bureaucrats" (the first group being highlighted by the colleges) and "scholars, scientists or leaders of opinion" (the second/latter group). Including both groups ("bureaucrats" and "scholars") defeats the purpose of the distinguishing word "latter."

The incorrect option is 4: only administrators.
The term "administrators" or "bureaucrats" is the first group mentioned in the comparison—the alumni the colleges are proud of. The phrase "these latter" refers to the group that the colleges are less proud of in comparison, which is "scholars, scientists or leaders of opinion." Furthermore, this option includes only one category, whereas the actual referent is a group of three different positive roles.

The correct option is 2:

The verb phrase "are flying" in the sentence "The birds are flying in the sky" is correctly classified as Intransitive. An intransitive verb is a verb that does not require a direct object to complete its meaning. The action expressed by an intransitive verb is complete in itself, and it is performed solely by the subject. In this sentence, the subject is "The birds," and the verb is "are flying." The action of flying is complete; the birds are performing the action, and the phrase "in the sky" merely functions as an adverbial phrase, telling us where the action is happening, but it is not receiving the action. Since no object is needed to receive the action of flying, the verb is intransitive.

The incorrect option is 1 (Transitive): A transitive verb always requires a direct object to complete its meaning (e.g., "The boy kicked the ball"). Since the sentence "The birds are flying in the sky" does not have a direct object receiving the action of flying, the verb cannot be classified as transitive.

The incorrect option is 3 (Infinitive): An infinitive is the base form of a verb, usually preceded by "to" (e.g., to fly, to sing). The verb form "are flying" is the Present Continuous tense (auxiliary verb "are" + present participle "flying"), not the infinitive form.

The incorrect option is 4 (Phrasal verb): A phrasal verb is a verb combined with an adverb or a preposition, or both, to create a meaning different from the original words (e.g., look up, break down). "Are flying" consists of an auxiliary verb and a main verb, and does not contain the structure of a phrasal verb.

The correct option is 1:
The sentence "I paid the bill but the cashier did not _______" requires a noun in the blank space to function as the object of the verb "did not give" or a similar implied verb, although the sentence construction is somewhat unconventional for standard grammar rules involving "did not" followed by a direct object. However, based on the context of paying a bill, the expected outcome of the cashier's action is to provide a piece of paper confirming the transaction, which is a "receipt." A "receipt" is a formal written acknowledgment that something of value has been received, and it perfectly fits the transactional context of the sentence. The primary function of a cashier in this exchange, after receiving payment, is to issue this document. The phrasing implies the transaction was incomplete because the document was withheld.

The incorrect option is 2:
"receive" is the base form of a verb. Since the structure already uses the auxiliary verb "did not," the main verb "receive" would normally follow (e.g., "did not receive the money"). However, 'receive' would mean the cashier didn't get the money, which contradicts the first part of the sentence ("I paid the bill").

The incorrect option is 3:
"receiving" is a present participle or gerund. While grammatically possible in some constructions, it does not fit here. "Did not receiving" is grammatically incorrect, as the auxiliary verb "did not" must be followed by a base verb, not a present participle.

The incorrect option is 4:
"received" is the past tense or past participle form of the verb "receive." Like Option 2, if the sentence were "The cashier did not received..." it would be grammatically incorrect (auxiliary 'did' requires the base form of the verb). Furthermore, if it meant the cashier didn't receive the payment, it would contradict the beginning of the sentence.

Option 1 is the correct answer because it accurately matches each phrasal verb with the appropriate sentence, filling the gaps in a way that makes logical and grammatical sense. Let's break down each match:

(a) Give up : (iv) There is something in you that does not let you _____ the struggle.

• "Give up" means to stop trying or to quit. The sentence suggests that there is something preventing the person from quitting the struggle, which aligns perfectly with the meaning of "give up."

(b) Carry on : (iii) He realized that he could not _____ with working this company.

• "Carry on" means to continue doing something. The sentence implies that the person cannot continue working with the company, which fits the meaning of "carry on."

(c) Look after : (ii) If you want to go out, I will _____ the children.

• "Look after" means to take care of someone or something. The sentence is about taking care of the children, which is exactly what "look after" means.

(d) Broke out : (i) A communal war _____ when the place of worship was set ablaze by some riotous people.

• "Broke out" means to start suddenly, typically used for something undesirable like a war or a fire. The sentence describes the sudden start of a communal war, which is consistent with the meaning of "broke out."

Now, let's explain why the other options are incorrect:

Option 2:

• This option incorrectly matches "Carry on" with (ii) and "Look after" with (iii), which does not make sense because "carry on" does not mean to take care of children, and "look after" does not mean to continue working with a company.

Option 3:

• This option incorrectly matches "Give up" with (i) and "Broke out" with (iv), which does not fit because "give up" does not mean to start a war, and "broke out" does not relate to struggling.

Option 4:

• This option incorrectly matches "Broke out" with (iv) and "Give up" with (i), which does not make sense because "broke out" does not relate to struggling, and "give up" does not mean to start a war.

In conclusion, Option 1 is the only option that correctly aligns each phrasal verb with its appropriate sentence, making it the correct answer.

The sentence in question is: "My father doesn't allow anybody _____ in our house." The correct answer is Option 2: "to smoke." Here is a detailed explanation justifying why Option 2 is correct and why the other options are incorrect:

1. Explanation for Option 2 ("to smoke"):

   • The phrase "allow anybody to smoke" is grammatically correct and follows the standard structure for expressing permission or prohibition. In English, when using the verb "allow," it is common to follow it with an infinitive form of the verb, which in this case is "to smoke." This construction clearly communicates that smoking is not permitted by the father in the house.

2. Explanation for why the other options are incorrect:

   • Option 1 ("to have smoke"): This option is incorrect because "to have smoke" is not a standard expression in English when referring to the act of smoking. The phrase "to have smoke" could imply possessing smoke, which is not the intended meaning. The correct expression for the act of smoking is simply "to smoke."
   • Option 3 ("smoking"): While "smoking" is a gerund and can be used in some contexts, it does not fit well in this sentence structure. The verb "allow" typically requires an infinitive form (to + verb) to indicate what is being permitted or prohibited, making "to smoke" the appropriate choice.
   • Option 4 ("for smoke"): This option is incorrect because "for smoke" does not convey the intended meaning of the sentence. The preposition "for" is not used in this context to indicate an action being allowed or disallowed. The correct prepositional phrase should be "to smoke" to indicate the action of smoking.

In summary, Option 2 ("to smoke") is the correct choice because it accurately follows the grammatical structure required by the verb "allow" and clearly conveys the intended meaning of the sentence.

Option 1, "The children kept quiet," is identified as having a different verb pattern compared to the other options. Let's explore why this is the case:

1. Explanation for Option 1:

   • The sentence "The children kept quiet" uses the verb "kept" followed by an adjective "quiet." This structure is known as a linking verb pattern, where "kept" functions similarly to verbs like "become" or "seem," linking the subject "The children" to the adjective "quiet," which describes their state or condition.

2. Explanation for Option 2:

   • In "The boy lost his pen," the verb "lost" is a transitive verb that requires a direct object to complete its meaning. Here, "his pen" is the direct object of the verb "lost." This follows a standard subject-verb-object (SVO) pattern.

3. Explanation for Option 3:

   • The sentence "Rajni opened the door" also follows a subject-verb-object (SVO) pattern. The verb "opened" is transitive, and "the door" serves as the direct object, receiving the action of the verb.

4. Explanation for Option 4:

   • Similarly, "My father helped the poor" uses a transitive verb "helped" with "the poor" as the direct object. This sentence follows the subject-verb-object (SVO) pattern as well.

In summary, Option 1 is correct because it employs a linking verb pattern, which is distinct from the transitive verb patterns found in the other options. The other sentences all follow a subject-verb-object structure, making Option 1 the only one with a different verb pattern.

Option 1, "I am a teacher," is the correct answer because it contains a 'be' form of the verb. The 'be' verbs include forms such as "am," "is," "are," "was," "were," "being," and "been." In this sentence, "am" is the 'be' form of the verb, indicating a state of being or existence. It connects the subject "I" with the predicate "a teacher," describing the identity or role of the subject.

Now, let's examine why the other options are incorrect:

Option 2: "My sister wrote a letter."

• This sentence uses the verb "wrote," which is the past tense of "write." It is an action verb, not a 'be' form of the verb. Therefore, it does not meet the criteria of having a 'be' verb.

Option 3: "He can swim."

• The verb in this sentence is "can," which is a modal auxiliary verb, and "swim," which is an action verb. Neither "can" nor "swim" is a 'be' form of the verb. Thus, this option is incorrect.

Option 4: "They have a lot of money."

• The verb "have" is a main verb indicating possession. It is not a 'be' form of the verb. Therefore, this sentence does not contain a 'be' verb, making it incorrect for this question.

In conclusion, Option 1 is the only sentence that includes a 'be' form of the verb, specifically "am," which is why it is the correct answer.

Option 2, "smother," is the correct word to complete the sentence: "It is often difficult to smother a yawn when you listen to a long speech on the value of time."

1. Explanation for Option 2 (smother):

   • The word "smother" means to suppress or stifle something. In the context of the sentence, it refers to the act of trying to hold back or suppress a yawn. When listening to a long speech, especially one that might not be engaging, people often feel the urge to yawn. The sentence highlights the challenge of suppressing this natural reaction, making "smother" the most appropriate choice.

2. Explanation for why other options are incorrect:

   • Option 1 (cause): The word "cause" means to make something happen. It does not fit the context of the sentence, as the sentence is about trying to suppress a yawn, not causing it. Therefore, "cause" is not suitable here.
   • Option 3 (fire): The word "fire" typically means to ignite or discharge something. It is unrelated to the context of suppressing a yawn and does not make sense in the sentence. Thus, "fire" is incorrect.
   • Option 4 (allow): The word "allow" means to let something happen. While it could be related to not suppressing a yawn, the sentence specifically mentions the difficulty of suppressing it. Therefore, "allow" contradicts the intended meaning of the sentence and is not the correct choice.

In conclusion, "smother" is the correct word because it accurately describes the action of trying to suppress a yawn, which aligns with the context of the sentence.

Option 1 is the correct answer because "cut down" in the context of expenses means to reduce the size or amount of those expenses. The sentence "We must cut down expenses or we will be getting into debt" clearly indicates a need to lower the amount of money being spent to avoid financial problems. Therefore, "reduce in size or amount" accurately reflects the meaning of the phrasal verb in the given sentence.

Here's why the other options are incorrect:

• Option 2: Appear: "Appear" means to become visible or noticeable. This has no relevance to reducing expenses. Cutting down expenses doesn't make them appear; it makes them smaller.

• Option 3: Expose: "Expose" means to uncover or reveal something. This is unrelated to the concept of reducing expenses. Cutting down expenses doesn't reveal them; it lessens them.

• Option 4: Rise to the surface: "Rise to the surface" means to become apparent or come into prominence. This is not related to reducing expenses. Cutting down expenses doesn't make them rise to the surface; it diminishes them.

In the sentence "They decided to cooperate," the phrase "to cooperate" is used as an infinitive. An infinitive is the base form of a verb, often preceded by the word "to." It can function as a noun, adjective, or adverb in a sentence. In this case, "to cooperate" functions as a noun, serving as the object of the verb "decided." This is why Option 3, Infinitive, is the correct answer.

Now, let's explain why the other options are incorrect:

1. Verb: While "cooperate" is a verb, in this sentence, it is not functioning as the main verb. The main verb here is "decided." The phrase "to cooperate" is an infinitive phrase, not the main verb of the sentence.

2. Gerund: A gerund is a verb form that ends in -ing and functions as a noun. In this sentence, "cooperate" does not end in -ing, and it is not functioning as a gerund. Therefore, Option 2 is incorrect.

3. Adjective: An adjective describes or modifies a noun. In this sentence, "to cooperate" does not describe or modify a noun; instead, it acts as the object of the verb "decided." Hence, Option 4 is incorrect.

In conclusion, the phrase "to cooperate" is correctly identified as an infinitive, making Option 3 the correct choice.

To justify why Option 1 is the correct answer, let's analyze each phrasal verb and its appropriate context in the sentences provided in Column-B:

1. Break in: This phrasal verb means to enter a place forcibly or without permission. In the context of Column-B, the sentence "If the door is locked, I will try to _____." fits perfectly with "break in," as it implies attempting to enter despite the door being locked. Therefore, "Break in" matches with "c."

2. Took off: This phrasal verb is commonly used to describe an aircraft leaving the ground and beginning to fly. In Column-B, the sentence "A plane _____." is the most suitable match for "took off," as it describes the action of a plane starting its flight. Thus, "Took off" matches with "b."

3. Clear away: This phrasal verb means to remove or tidy up something. In Column-B, the sentence "I’ll help you _____ the dishes." is the appropriate context for "clear away," as it involves tidying up or removing dishes. Hence, "Clear away" matches with "d."

4. Handed over: This phrasal verb means to give something to someone else. In Column-B, the sentence "He _____ the box." fits well with "handed over," as it suggests giving the box to someone. Therefore, "Handed over" matches with "a."

Now, let's explain why the other options are incorrect:

• Option 2: This option incorrectly pairs "Break in" with "d," "Took off" with "a," "Clear away" with "b," and "Handed over" with "c." These pairings do not logically fit the meanings of the phrasal verbs with the contexts provided in Column-B.

• Option 3: This option incorrectly pairs "Break in" with "a," "Took off" with "b," "Clear away" with "c," and "Handed over" with "d." While "Took off" with "b" is correct, the other pairings do not match the meanings of the phrasal verbs with the contexts.

• Option 4: This option incorrectly pairs "Break in" with "d," "Took off" with "b," "Clear away" with "d," and "Handed over" with "c." Again, while "Took off" with "b" is correct, the other pairings do not align with the meanings of the phrasal verbs.

In conclusion, Option 1 is the only choice where each phrasal verb is correctly matched with the appropriate context in Column-B, making it the correct answer.

Fire burns.

Explanation:

Option 1, "Fire burns," illustrates the use of an intransitive verb because the verb "burns" does not take a direct object. An intransitive verb describes an action that does not act upon something else. In this case, the fire is simply performing the action of burning; there is no object being burned by the fire mentioned in the sentence. The action is complete within the subject itself.

Why the other options are incorrect:

• Option 2: The principal hoisted the flag on Independence Day. The verb "hoisted" is transitive because it takes a direct object: "the flag." The principal performed the action of hoisting something (the flag).

• Option 3: She is reading the newspaper. The verb phrase "is reading" is transitive because it takes a direct object: "the newspaper." She is performing the action of reading something (the newspaper).

• Option 4: Our team won the match. The verb "won" is transitive because it takes a direct object: "the match." The team performed the action of winning something (the match).

Option 2 is the correct answer for the given question. Let's explain why this is the case by matching each animal with the correct sound they make:

(A) Dogs - The correct sound for dogs is "bark." Therefore, the correct match is A-iv.

(B) Cows - Cows are known to "moo." Therefore, the correct match is B-v.

(C) Cats - Cats "mew." Therefore, the correct match is C-i.

(D) Frogs - Frogs "croak." Therefore, the correct match is D-iii.

(E) Horses - Horses "neigh." Therefore, the correct match is E-ii.

Now, let's look at Option 2: A-iv, B-v, C-i, D-iii, E-ii. This option correctly matches each animal with the sound they make:

• Dogs (A) are matched with "bark" (iv).
• Cows (B) are matched with "moo" (v).
• Cats (C) are matched with "mew" (i).
• Frogs (D) are matched with "croak" (iii).
• Horses (E) are matched with "neigh" (ii).

This confirms that Option 2 is indeed the correct answer.

Now, let's explain why the other options are incorrect:

Option 1: A-ii, B-iv, C-v, D-i, E-iii

• Dogs do not "neigh" (ii), they "bark" (iv).
• Cows do not "bark" (iv), they "moo" (v).
• Cats do not "moo" (v), they "mew" (i).
• Frogs do not "mew" (i), they "croak" (iii).
• Horses do not "croak" (iii), they "neigh" (ii).

Option 3: A-ii, B-iv, C-v, D-iii, E-i

• Dogs do not "neigh" (ii), they "bark" (iv).
• Cows do not "bark" (iv), they "moo" (v).
• Cats do not "moo" (v), they "mew" (i).
• Horses do not "mew" (i), they "neigh" (ii).

Option 4: A-v, B-iii, C-iv, D-ii, E-i

• Dogs do not "moo" (v), they "bark" (iv).
• Cows do not "croak" (iii), they "moo" (v).
• Cats do not "bark" (iv), they "mew" (i).
• Frogs do not "neigh" (ii), they "croak" (iii).
• Horses do not "mew" (i), they "neigh" (ii).

In conclusion, Option 2 is the only option that correctly matches each animal with the sound they make, which is why it is the correct answer.

Option 2, "set aside," is the correct phrasal verb to fill in the blank: "A fund has been set aside for the soldier's families." Here's why this option is appropriate and why the others are not:

1. Explanation for Option 2 ("set aside"):

   • "Set aside" means to reserve or allocate something for a specific purpose. In this context, it implies that a certain amount of money or resources has been specifically reserved for the families of soldiers. This usage is common when discussing funds or resources that are earmarked for a particular cause or group, making it the most suitable choice for the sentence.

2. Why the other options are incorrect:

   • Option 1 ("set up"):

     • "Set up" generally means to establish or arrange something, such as an organization, system, or structure. While it could be used in the context of creating a fund, it does not convey the idea of reserving or allocating resources specifically for the soldier's families, which is the intended meaning in the sentence.

   • Option 3 ("set out"):

     • "Set out" typically means to begin a journey or to present something clearly. It does not fit the context of the sentence, as it does not relate to the allocation or reservation of funds.

   • Option 4 ("set in"):

     • "Set in" is used to describe something that has begun and is likely to continue, such as a season or a trend. It is not applicable in the context of allocating or reserving funds for a specific purpose.

In summary, "set aside" is the correct choice because it accurately conveys the action of reserving funds specifically for the soldier's families, aligning with the intended meaning of the sentence.

The correct phrasal verb for the underlined word "rejected" in the sentence "She rejected his request to take her home" is "turned down," which corresponds to Option 2. Here's a detailed explanation:

1. Explanation for Option 2 (turned down):

   • The phrasal verb "turn down" is commonly used to mean "reject" or "refuse." In the context of the sentence, "She turned down his request" accurately conveys that she did not accept or agree to his request to take her home. This usage is well-established in English, making "turned down" the appropriate choice to replace "rejected."

2. Explanation for why the other options are incorrect:

   • Option 1 (turned up): The phrasal verb "turn up" typically means to appear or arrive, often unexpectedly. It does not convey the meaning of rejecting or refusing something. Therefore, it is not suitable for replacing "rejected" in this context.
   • Option 3 (turned out): "Turn out" generally means to result in a particular way or to attend an event. It does not imply rejection or refusal, making it an incorrect choice for this sentence.
   • Option 4 (turned off): "Turn off" usually means to deactivate something or to cause someone to lose interest. While it can imply a negative reaction, it does not specifically mean to reject a request, so it is not the correct replacement for "rejected" in this context.

In summary, "turned down" is the correct phrasal verb to use in place of "rejected" because it directly conveys the act of refusing or not accepting a request, aligning perfectly with the intended meaning of the sentence.

1. Explanation for Option 1 ("broken out"):

The phrase "broken out" is a phrasal verb commonly used to describe the sudden start or occurrence of something, especially in the context of diseases, conflicts, or fires. In the sentence "Cholera has _____ in this village," the use of "broken out" is appropriate because it conveys the idea that cholera has suddenly appeared or started spreading in the village. This aligns with the typical usage of "broken out" when referring to the onset of an epidemic or outbreak, making it the correct choice for the sentence.

2. Explanation for why the other options are incorrect:

• Option 2 ("broken down"): The phrasal verb "broken down" is typically used to describe something that has stopped functioning or is in a state of disrepair, such as a machine or vehicle. It can also refer to a person becoming emotionally overwhelmed. It does not fit the context of a disease starting to spread, so it is not suitable for this sentence.

• Option 3 ("broken up"): "Broken up" is often used to describe the ending of a relationship, the dispersal of a group, or the division of something into smaller parts. It does not convey the idea of a disease starting or spreading, making it an incorrect choice for this context.

• Option 4 ("broken off"): The phrase "broken off" is used to describe something that has been detached or separated from a larger whole, or the cessation of an activity or relationship. It does not relate to the sudden onset of a disease, so it is not appropriate for this sentence.

In conclusion, "broken out" is the correct phrasal verb to use in the sentence because it accurately describes the sudden emergence or spread of cholera in the village, which is consistent with the typical usage of this expression in the context of disease outbreaks.

The correct phrasal verb to fill in the blank is "broke down," as indicated by Option 1. Here is a detailed explanation justifying why this is the correct choice and why the other options are incorrect:

1. Broke down: This phrasal verb is commonly used to describe a situation where a machine or vehicle stops functioning properly. In the context of the sentence, "The car _____ when we were driving through the desert," the phrase "broke down" accurately describes a scenario where the car stopped working while being driven. This is a typical usage of the phrasal verb, making it the most appropriate choice for the sentence.

2. Break out: This phrasal verb typically means to escape from a place or to suddenly start (as in a fire or a rash). It does not fit the context of the sentence, as it does not relate to a vehicle malfunctioning. Therefore, it is incorrect in this context.

3. Broke off: This phrasal verb generally means to end something abruptly, such as a relationship or a conversation. It does not apply to the situation of a car malfunctioning, making it an unsuitable choice for the sentence.

4. Break in: This phrasal verb is often used to describe entering a place illegally or interrupting. It can also mean to wear something new until it becomes comfortable. Neither of these meanings is relevant to a car stopping while being driven, so it is not the correct choice for the sentence.

In conclusion, "broke down" is the correct phrasal verb to use in the given sentence because it accurately describes the car ceasing to function while driving through the desert. The other options do not convey the intended meaning and are therefore incorrect in this context.

Option 1, "To see is to believe," is the correct infinitive form of the sentence "Seeing is believing" because it accurately transforms both gerunds ("seeing" and "believing") into their infinitive equivalents ("to see" and "to believe"). An infinitive is the base form of a verb preceded by "to." This option maintains the original sentence's meaning and grammatical structure while using the infinitive form.

Here's why the other options are incorrect:

• Option 2: Seen is to believe. This option is incorrect because "seen" is the past participle of the verb "see," not the infinitive. The first part of the sentence is grammatically incorrect and doesn't maintain the original meaning.

• Option 3: To see is believing. This option is incorrect because it only converts the first gerund ("seeing") into an infinitive ("to see") but leaves the second verb ("believing") in its gerund form. This creates an imbalance in the sentence structure and doesn't fully transform the sentence into its infinitive equivalent.

• Option 4: Seeing is to believe. This option is incorrect because it only converts the second gerund ("believing") into an infinitive ("to believe") but leaves the first verb ("seeing") in its gerund form. This also creates an imbalance in the sentence structure and doesn't fully transform the sentence into its infinitive equivalent.

Explanation:

1. Correct Answer: Option 3 - "did, do"

   The sentence in question is: "What ____ you ____ yesterday ... with this knife?" To fill in the blanks correctly, we need to consider the tense and structure of the sentence. The word "yesterday" indicates that the action took place in the past. Therefore, the first blank requires a past tense auxiliary verb, which is "did." The second blank requires the base form of the main verb, which is "do," because when using "did" as an auxiliary verb in questions, the main verb remains in its base form. Thus, the correct sentence is: "What did you do yesterday ... with this knife?"

2. Why Other Options Are Incorrect:

   • Option 1: "do, did"

     • This option is incorrect because "do" is present tense, which does not match the past tense context indicated by "yesterday." Additionally, "did" as the main verb is not appropriate here, as the structure requires the base form of the verb after "did."

   • Option 2: "do, do"

     • This option is incorrect because both "do" verbs are in the present tense, which contradicts the past tense context provided by "yesterday." The sentence requires a past tense auxiliary verb followed by the base form of the main verb.

   • Option 4: "did, did"

     • This option is incorrect because while "did" is correctly used as the past tense auxiliary verb, the second "did" is not in the base form. After using "did" as an auxiliary verb, the main verb should be in its base form, which is "do."

In conclusion, Option 3 is the only choice that correctly uses "did" as the past tense auxiliary verb and "do" as the base form of the main verb, aligning with the past tense context of the sentence.