问题补充：
Please the TV when you leave the room.
A. turn off
B. turn on
C. turn up
D. turn down
答案：
(答案→)A. turn off
B. turn on
C. turn up
D. turn down
解析：句意：当你离开房间时请关上电视。A. turn off 关上B. turn on 打开 C. turn up 调高D. turn down调低；根据句意答案应该是关上，故选A。
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