－    Igoouttoplaynow,mum?－No,you       .Youshoulddoyour...

问题详情：

－     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

【回答】

D  

知识点：虚拟语气与情态动词

题型：选择题