题目内容
It gets dark. Please ________ the light.
- A.switch off
- B.turn on
- C.turn down
- D.switch up
B
switch vt., vi.(与on, off连用),开关(电器等设备),switch on/off=turn on/off.
switch vt., vi.(与on, off连用),开关(电器等设备),switch on/off=turn on/off.
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