-The lights in the classroom are still on. -Sorry. I’ll go and .A. turn them onB. turn th

问题补充：

-The lights in the classroom are still on.

-Sorry. I’ll go and .

A. turn them on

B. turn them off

C. turn them down

D. turn them up

答案：

A. turn them on

(答案→)B. turn them off

C. turn them down

D. turn them up

解析：句意:-教师里的灯还亮着。-对不起，我去把它们关掉。turn on 打开；turn off 关掉；turn down 把声音关小；拒绝；turn up 把声音开大；出现。根据句意可知选B。