题目内容
Sleeping with the lights on is a waste.You’d better______ all the lights are off before you go to bed.
A.look for B.turn out C.make sure D.save up
C
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题目内容
Sleeping with the lights on is a waste.You’d better______ all the lights are off before you go to bed.
A.look for B.turn out C.make sure D.save up
C