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

问题补充：

–The lights in the classroom are still on.

--Sorry. I’ll go and .

A. turn them off

B. turn them on

C. turn them down

D. turn them up

答案：

(答案→)A. turn them off

B. turn them on

C. turn them down

D. turn them up

解析：根据第一句的内容，可知灯是开着的，而下文说的就是要去关灯的意思，故选答案为A，表示关灯的意思。