Question

we used sit in the same row.rewrite the underlined expression after correting it​

Answer 1

Answer:

Option A is incorrect since the sentence has been changed. Option B is incorrect since "intelligent" is an adjective in the sentence. The noun form of "intelligent" is "intelligence" which is present in option C. Therefore, C is correct while option D is wrong.

Explanation:

Answer 2

We used to sit in the same row.

• Used to is one of the semi modal auxiliaries which is used in places to describe something which is continued happening in past. Some other examples include I used to play football in my childhood, My father used to take me to school etc...
• A modal auxiliary verb is a verb which expresses something such as ability, possibility, permission, willing, wish, obligation, duty, request, order, advice etc..
• A semi modal or quasi modal is a verb which is used in place for modal verb but only in place of interrogative and negative constructions.There are mainly four modal auxiliaries such as Dare, Used to, Need and Ought to.
• Here you note that the semi modal includes main verbs and infinitives. Date and Need can also function as main verb. But it's meaning in auxiliary verb is different from that in main verb. True modals are never followed by infinitives.

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