Listen! Marry is singing in the next room. -- It __ _ be Marry. She has gone home.A. mu

问题补充：

--Listen! Marry is singing in the next room.

-- It __ _ be Marry. She has gone home.

A. mustn’t

B. may

C. can’t

D. should

答案：

A. mustn’t

B. may

C. can’t

D. should

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