It’s getting dark please the light.A. turn offB. turn onC. turn upD. turn down

问题补充：

It’s getting dark, please the light.

A. turn off

B. turn on

C. turn up

D. turn down

答案：

A. turn off

(答案→)B. turn on

C. turn up

D. turn down

解析：turn off关掉，拐弯；turn on打开，发动；turn up出现，发生；turn down减小，调低。句意：天黑了，请打开电灯。结合语境可知选B。