I didn't hear the phone. I asleep. [ ] A.must beB.should have been C.could beD.m
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![I didn't hear the phone. I asleep. [ ] A.must beB.should have been C.could beD.m](/pic/43_990729.jpg)
I didn't hear the phone. I ________ asleep.
[]
A.must beB.should have beenC.could beD.must have been试题答案
答案:D
![I didn't hear the phone. I asleep. [ ] A.must beB.should have been C.could beD.m](/pic/43_990729.jpg)
I didn't hear the phone. I ________ asleep.
[]
A.must beB.should have beenC.could beD.must have been答案:D