Question

Fill in the blank with the most appropriate option:

As my sister was taking an examination I _____ look after her baby yesterday.

• A. could
• B. had to
• C. must
• D. was able to
• E. should

Answer 1

The correct option is B had to

A verb is used to express an occurrence, action, or state. It is the grammatical center of the predicate in a sentence.

An auxiliary verb is a verb which is used in the formation of tenses, moods, tones, etc.

Option B is correct as was taking indicates the use of had to.

The other options are wrong as no other tense can be used here.

The correct answer is B) had to.