Answer:



The correct answer is option 'A' - "didn't find".

Explanation:



In this sentence, the verb form "didn't find" is the correct choice. Here's why:

1. Tense: The verb form should be in the past tense because the action of looking for someone already took place before the speaker made the statement. The past tense is formed by using the auxiliary verb "did" and the base form of the main verb "find," which gives us "didn't find."

2. Negative form: The sentence indicates that the speaker searched for someone but was unsuccessful. To express this negative outcome, we use the negative form of the verb, which is "didn't find." The contraction "didn't" is a combination of the auxiliary verb "did" and the negative particle "not."

3. Subject-verb agreement: The subject "I" is a singular pronoun, so the verb should be in the base form "find" without any additional inflections or endings.

Let's consider the other options and explain why they are incorrect:

- Option 'B' - "hadn't found": This verb form is in the past perfect tense, which is used to express an action that was completed before another past action or a specific time in the past. However, there is no indication in the sentence that the action of looking for someone happened before another past action or a specific time. Therefore, "hadn't found" is not appropriate in this context.

- Option 'C' - "don't find": This verb form is in the present simple tense, which is used to express habitual actions or general truths. However, in the given sentence, the action of looking for someone has already taken place in the past. Therefore, "don't find" is not suitable in this context.

In conclusion, the correct verb form to fill in the blank is "didn't find" (option 'A') because it agrees with the past tense, expresses a negative outcome, and maintains subject-verb agreement.