Do remember to ______ the light when you leave the room.

Do remember to ______ the light when you leave the room.
A、turn up
B、turn on
C、turn off
D、turn down
【正确答案】：C
【题目解析】：根据句意，应该选择“关闭”。句意：离开房间时一定记着把灯关掉。