Beerbottlescanberecycledbuttheyneedcleaningthoroughly,...

问题详情：

 Beer bottles can be recycled but they need cleaning thoroughly, ________ they?

A. needn't            B. can't                C. mustn't                   D. don't

【回答】

D

知识点：疑问句 反义疑问句

题型：选择题