问题
选择题
When you leave the reading room, you should remember to _____ the lights.
A. turn on B. turn down C. turn off
答案
答案：C
题目分析：句意: 当你离开阅览室时，你应该记住关灯。A. turn on 打开， B. turn down 开小点， C. turn off 关掉，据句意，故选C。
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