- May I go swimming now? - No, you . You must finish your homework first. [ ]A. mustn't B. may not C. couldn't D. needn't 题目和参考答案——青夏教育精英家教网—

题目内容

— May I go swimming now? 　　　
— No, you ______. You must finish your homework first.

[ ]

A. mustn't
B. may not
C. couldn't
D. needn't

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