[单选题]When I came back to the office, I found that all the lights were on. But I remember ______ all the lights before I left.
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2023-10-01 08:02:56
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[单选题]When I came back to the office, I found that all the lights were on. But I remember ______ all the lights before I left.

A.to turn off
B.to turn down
C.turning off
D.turning down
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