There is no light in the dormitory. They must have gone to the lecture, ? A. didn't they B——青夏教育精英家教网—

摘要： There is no light in the dormitory. They must have gone to the lecture, ? A. didn't they B. don't they C. mustn't they D. haven't they

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There is no light in the dormitory .They must have gone to the lecture,_____?（2004 上海春，31）

A.didn’t they B.don’t they

C.mustn’t they D.haven’t they

There is no light in the dormitory. They must have gone to the lecture, ________? (NMET 2004)

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