31．--Must we collect the waste paper and bottles now?-- ．You Call do it after class．A．Yes.you must B．No.you needn’t C．Yes.you may D．No.you mustn’t 【查看更多】

 

題目列表(包括答案和解析)

-Must we collect the waste paper and bottles now?

-- __________．You Call do it after class．

A．Yes，you must  B．No，you needn’t  C．Yes，you may  D．No，you mustn’t

查看答案和解析>>


同步練習冊答案