Supply the correct form of the verb in the following sentence :
She _____ a new dress last week.

Question

Accepted Answer

Option 4, "bought," is the correct answer for the sentence "She _____ a new dress last week." Here's why:

1. **Explanation for Option 4 ("bought"):**
   - The verb "bought" is the simple past tense of "buy." The sentence specifies "last week," which indicates a completed action in the past. The simple past tense is used to describe actions that were completed at a specific time in the past. Therefore, "bought" correctly fits the context of the sentence, as it indicates that the action of purchasing the dress was completed last week.

2. **Explanation for why other options are incorrect:**

- **Option 1 ("has bought"):**
     - "Has bought" is in the present perfect tense, which is used to describe actions that have occurred at an unspecified time before now or actions that started in the past and continue to the present. Since the sentence specifies "last week," a specific time in the past, the present perfect tense is not appropriate here.

- **Option 2 ("has been buying"):**
     - "Has been buying" is in the present perfect continuous tense, which is used to describe actions that started in the past and have been continuing up to the present moment. This tense is not suitable for the sentence because it implies an ongoing action, whereas the sentence refers to a completed action that occurred last week.

- **Option 3 ("buys"):**
     - "Buys" is in the simple present tense, which is used for habitual actions, general truths, or actions happening right now. The sentence clearly refers to a specific event that happened last week, not a habitual action or a current event, making the simple present tense inappropriate.

In summary, Option 4, "bought," is the correct choice because it accurately reflects the past action of purchasing a dress last week, aligning with the use of the simple past tense for completed actions at a specific time in the past.