题目内容
— May I do the homework tomorrow?
一 No, you______. You should hand in before class tomorrow.
A. mustn't B. needn't C. couldn't
一 No, you______. You should hand in before class tomorrow.
A. mustn't B. needn't C. couldn't
A.
考查情态动词。mustn't表示禁止,不准。Needn’t不必; couldn’t不能(过去)。
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