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Why is so silent in the room? He asleep now. [ ] A. should be B. must be C. must

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Why is so silent in the room? He asleep now. [ ] A. should be B. must be C. must

Why is so silent in the room? He ________ asleep now.

[]A.

should be

B.

must be

C.

must have been

D.

should have been

试题答案

答案:B