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---Wakeup,Tom.Timetorise.---I        asleepwhileIwasrea...

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问题详情:

---Wakeup,Tom.Timetorise.---I        asleepwhileIwasrea...

--- Wake up, Tom. Time to rise.

--- I         asleep while I was reading.

A.should have fallen        B.must have fallen       C.could fall             D.must fall

【回答】

B

知识点:动词时态与语态

题型:选择题