18．Everyone must have known the death of the waitress, ?A. must theyB. mustn’t theyC. have

发布时间：2020-08-16 06:19:21


18．Everyone must have known the death of the waitress,     ?
A. must they
B. mustn’t they
C. haven’t they
D. have they

网友回答

A. must they
B. mustn’t they
(答案→)C. haven’t they
D. have they
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