I didn't hear the phone. I asleep. [ ] A.must beB.must have been C.should beD.sh
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![I didn't hear the phone. I asleep. [ ] A.must beB.must have been C.should beD.sh](/pic/43_930308.jpg)
I didn't hear the phone. I ________ asleep.
[]
A.must beB.must have beenC.should beD.should have been
试题答案
答案:B
![I didn't hear the phone. I asleep. [ ] A.must beB.must have been C.should beD.sh](/pic/43_930308.jpg)
I didn't hear the phone. I ________ asleep.
[]
A.must beB.must have beenC.should beD.should have been
答案:B