Question

Fill in the blank with the most suitable auxiliary verb:
She ____________ not believe in superstitions.

• A. is
• B. does
• C. do
• D. are

Answer 1

The correct option is B does

Auxiliary verbs are helping verbs that add some meaning to the clauses in which they appear. They almost always (except in some cases) appear with the verb. The sentence is a negative one due to the use of the word 'not'. The auxiliary verb 'do', 'did' and 'does' are commonly used in question sentences or negative sentences. 'Do' is used in first and second person singular and plural and third person plural whereas 'does' is used in third person singular. The sentence given uses 'she' which is a third person singular and therefore, the most appropriate word to fill in the blank is option B) does and not option C) do.

'Is' and 'are' are used in positive or affirmative sentences and therefore options A) and D) are incorrect answers in the given context of the sentence.