. -- I go out to play now mum?--No you . You should do your homework first. A. Must mus

问题补充：

. -- I go out to play now, mum?

--No, you . You should do your homework first.

A. Must, mustn’t

B. Might, wouldn’t

C. Need, mustn’t

D. May, had better not

答案：

A. Must, mustn’t

B. Might, wouldn’t

C. Need, mustn’t

(答案→)D. May, had better not

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