题目内容
(请给出正确答案)
[主观题]
I didn't hear the phone. I ______ asleep.A.must beB.must have beenC.should beD.should have
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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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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