Choose a suitable option :
We ....... keep our promise (obligation).

Question

Choose a suitable option :
 We ....... keep our promise (obligation).

Accepted Answer

The question asks us to choose a suitable word to complete the sentence "We ....... keep our promise" in the context of obligation. The correct answer is Option 3: "should."

1. Explanation for Option 3 ("should"):
   - The word "should" is used to express obligation, duty, or correctness, often when giving advice or recommendations. In this context, "should" indicates that keeping a promise is a moral or ethical obligation. It suggests that it is the right thing to do, aligning with the sense of duty or responsibility. Therefore, "We should keep our promise" correctly conveys the idea that it is important and necessary to fulfill our commitments.

2. Explanation for why the other options are incorrect:
   - Option 1 ("may"): "May" is used to express possibility or permission. It does not convey a sense of obligation. If we say "We may keep our promise," it implies that keeping the promise is optional or dependent on circumstances, which does not align with the concept of obligation.
   
   - Option 2 ("can"): "Can" is used to express ability or capability. It indicates whether someone is able to do something, not whether they are obliged to do it. "We can keep our promise" suggests that we have the ability to keep the promise, but it does not imply that we are required to do so.
   
   - Option 4 ("might"): "Might" is used to express a lower probability or possibility than "may." Similar to "may," it does not convey obligation. "We might keep our promise" suggests uncertainty or a lack of commitment, which contradicts the notion of obligation.

In conclusion, Option 3 ("should") is the correct choice because it appropriately expresses the obligation to keep a promise, aligning with the moral or ethical duty to fulfill commitments.