— Must they clean and tidy the classroom now? — No, they . It after school in the afternoon.A.mustn’

题目简介

— Must they clean and tidy the classroom now? — No, they . It after school in the afternoon.A.mustn’

题目详情

— Must they clean and tidy the classroom now?
— No, they      . It       after school in the afternoon.
A.mustn’t; must cleanB.needn’t; must clean
C.mustn’t; need be cleanedD.don’t have to; can be cleaned
题型:单选题难度:偏易来源:不详

答案

D
must构成的一般疑问句通常否定回答时用needn’t或don’t have to,本题的最后一句是被动句,结构为be+过去分词,即be cleaned,故本题选D。

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