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Itiscoldintheroom.Theymusthaveturnedoffthesteam,­­­­­­­...

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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

知識點:疑問句 反義疑問句

題型:選擇題

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