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Please tell Tom not to leave the classroom unless he ______ that all the lights ______.
A.makes sure; are turned off
B.makes sure; will be turned off
C.is made sure; are turned off
D.will make sure; will be turned off
A

试题分析:句意:请告诉Tom离开教室前确保所有的灯都被关掉。第一空he和make sure是主动关系,第二空all lights和turn off之间是被动关系,故用被动语态。故选A。
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