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19、There is no light on dormitory. They must have gone to the lecture, ______?

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

19、B

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There is no light on dormitory. They must have gone to the lecture, ______?

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

查看答案和解析>>

科目:高中英语 来源: 题型:

There is no light on dormitory. They must have gone to the lecture, ______?

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

查看答案和解析>>


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