Question

Don’t forget to ______ the lights and the TV in the sitting room before going to bed.

A. turn upB. turn onC. turn offD. turn down

Answer

C

【解析】

试题分析：句意：在睡觉之前不要忘记关掉起居室的灯和电视。A. turn up调高B. turn on打开； C. turn off关掉； D. turn down调低，根据句意此题选C。

考点：考查短语辨析