It's very cold in the room.They ______ off air conditioner.A.should have turnedB.must have turned C.should turnD.must turn答案是B，A错在哪里
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It''sverycoldintheroom.They______offairconditioner.A.shouldhaveturnedB.musthaveturnedC.shouldturnD.mu
It's very cold in the room.They ______ off air conditioner.A.should have turnedB.must have turned C.should turnD.must turn答案是B，A错在哪里
It's very cold in the room.They ______ off air conditioner.
A.should have turned
B.must have turned
C.should turn
D.must turn
答案是B，A错在哪里
It's very cold in the room.They ______ off air conditioner.A.should have turnedB.must have turned C.should turnD.must turn答案是B，A错在哪里
turn
房间里面很冷.他们关掉空调
turn off 关掉
turn
turn off 关上，关闭
C
应该选择B，意思是：屋里太冷了，他们一定是关掉了空调。must have 过去分词，表示对过去发生事情的推测。
B
b