-Mustwedosomecleaningnow?    -No,you      .You         ...

问题详情：

-Must we do some cleaning now?

     -No, you       . You          go home.

    A. must, may  B. must, must C. needn’t, may   D. can,can

【回答】

C

知识点：情态动词

题型：选择题