Question

Choose the correct alternative of the verb given in brackets.

Don't bring her unless she _____ (promise) to behave herself.

• A. promises
• B. will promise
• C. has promised
• D. promised

Answer 1

Answer: (A)

Verbs are used in the present tense to express actions in the present. Sometimes, they are also used to express habits or repeated actions or general truths or fixed arrangements. In this case, the present tense is to be used as "she promises to behave herself" means there is an agreement to behave herself. As the subject is a singular noun in the third person, the letter, 's' is added to the end of the verb to get its simple present tense. Hence, option C is the correct answer.

Option A is in simple past tense. Option B is in simple future tense. Option D is in the present perfect tense. Hence, these options are incorrect.