题目内容
The telephone rang but I didn’t hear it. I _______ asleep.
A. must be B. should be C. ought to have been D. must have been
【答案】
D
【解析】略
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题目内容
The telephone rang but I didn’t hear it. I _______ asleep.
A. must be B. should be C. ought to have been D. must have been
D
【解析】略