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—Whoissinginginthenextroom?—ItbeLucy.ShehasgonetoHongKong.A.can’tB.mustC.maynotD.needn’t

题目详情

 —Who is singing in the next room? 

— It _____ be Lucy. She has gone to Hong Kong.

A. can’t                 B. must          C. may not           D. needn’t

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答案和解析

A