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You must that the lights are turned off before leaving.A.knowB.examineC.checkD.r

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You must that the lights are turned off before leaving.A.knowB.examineC.checkD.r

You must _______ that the lights are turned off before leaving.

A.know

B.examine

C.check

D.remember

试题答案

C

解析:

此处check表示“核实”,相当于make sure。