B
这里的must表推测,变成反义疑问句时,要把它去掉
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They must have finished the work,---?A,mustn't they B,haven't they C,hadn't they D,didn't they
They must have finished the work,---?A,mustn't they B,haven't they C,hadn't they D,didn't they
英语人气：767 ℃时间：2019-08-19 18:17:12
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