Question

She...not abuse anybody.(past habit). Option A : Must Option B : Ought to Option C : Can Option D : Could

Answer 1

A:Must is right option because must is used at that place where there is important to do something like You must not pollute your environment while can is used at that place where we are talking about ability like She can speak Japanese. In this sentence we are talking about ability.Could is past of can

So,Must is right option

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