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Itiscoldintheroom.Theymusthaveturnedoffthesteam,­­­­­­­...

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问题详情:

Itiscoldintheroom.Theymusthaveturnedoffthesteam,­­­­­­­...

It is cold in the room. They must have turned off the steam, ­­­­­­­­­­­­­­­_______?

   A. mustn’t they               B. haven’t they       C. didn’t they                D. have they

【回答】

B

知识点:疑问句 反义疑问句

题型:选择题

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