—Remember to turn off the lights before leaving the classroom children.—.A. OK we willB.

问题补充：

—Remember to turn off the lights before leaving the classroom, children.

—.

A. OK, we will

B. Yes, we do

C. It doesn’t matter

D. You’re right

答案：

(答案→)A. OK, we will

B. Yes, we do

C. It doesn’t matter

D. You’re right

解析：当别人要求你做某个事情，而且是祈使句，如果你表示愿意，通常用will作回答，故选A。