摘要： I didn’t hear the phone. I asleep. A. must be B. must have been C. should be D. should have been 答:B.从句子的时态didn’t hear可判断出B项.
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I didn’t hear the phone. I ________ asleep.
A. must be B. must have been
C. should be D. should have been
查看习题详情和答案>>I didn't hear the phone. I asleep.
A. must be B. must have been C. should be D. should have been
查看习题详情和答案>>I didn't hear the phone. I_____ asleep.
A. must be B. must have been C. should be D. should have been
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