Question

【题目】Please ______ the computer. It's time to go to bed.
A.turn up
B.turn off
C.turn on
D.turn down

Answer 1

【答案】B
【解析】句意：请关掉电脑，是睡觉的时间了。turn up调大；turn off关掉；turn on打开；turn down调小。根据句意可知选B。