◎ 题干
Plastic bottles can be recycled but they need cleaning thoroughly, _______ they?
A.needn'tB. don'tC.mustn'tD.can't
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ Plastic bottles can be recycled but they need cleaning thoroughly, _______ they?A.needn'tB. don'tC.mustn'tD.can't…”主要考查了你对  【一般疑问句】【特殊疑问句】【反意疑问句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。