Question

Choose the right word/phrase from the given options to complete each sentence.
He ought to know better,_____________?
A. Isn’t
B. Shouldn’t he
C. Should he
D. Ought he

Answer 1

Hint: Question tags are words that convert a simple sentence into an interrogatory sentence. These are auxiliary verbs used in the sentence. Ought goes with should and positive sentences have negative question tags.

Complete answer:
Tag questions are made using an auxiliary verb (for example: be or have) and a subject pronoun (for example: I, you, she). Negative question tags are usually contracted: It's warm today, isn't it (not 'is it not'). Usually if the main clause is positive, the question tag is negative, and if the main clause is negative, it's positive.
Let us discuss the given options one by one and find the correct answer.
Option A) isn’t. This option is incorrect as ought goes with should and if the main clause is positive, the question tag is negative. So, this option is incorrect.
Option B) shouldn’t he this option is incorrect because if the main clause is positive, the question tag is negative. So, this option is incorrect.
Option C) should he this option is the correct because ought goes with should and positive sentences have negative question tags. Hence, this is the correct option.
 Option D) ought he This option is incorrect as ought goes with should and positive sentences have negative question tags. Hence this option is incorrect.

Hence, the correct answer is Option ‘ C’.

Note: Auxiliary (or Helping) verbs are used together with a main verb to show the verb’s tense or to form a negative or question. The most common auxiliary verbs are have, be, and do. We use these verbs negatively with the pronoun to create a question tag.