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
C

試題分析：句意：在睡覺之前不要忘記關(guān)掉起居室的燈和電視。A. turn up調(diào)高B. turn on打開； C. turn off關(guān)掉； D. turn down調(diào)低，根據(jù)句意此題選C。
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