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Make sure that the doors _____ before you go out.
A、locked
B、are loked
C、will locked
D、lock
【正确答案】：B
【题目解析】：B 被动语态。在你出去之前确信门是被锁着的。Make sure 确信，loke 锁。门是动作的接受者，故用被动语态。