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Plastic bottles can be recycled but they need cleaning thoroughly, _______ they?
A.needn'tB. don'tC.mustn'tD.can't
B

试题分析:考查反义疑问句。But连接两个并列句,由此判断反问句是对后面的句中进行反问,need做情态动词时,后面用动词原形,由此判断句中need是实义动词,所以反义问句要用助动词do构成,正确答案是B。 句意:塑料瓶子能够被回收利用,但是他们得需要彻底的清洗,是吗?
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