题目内容：

选择正确答案,
6.Remember ( )the lights after school
A.to turn off
B.to turn down
C.turning up
D.turning on

优质解答

选A.
turn off the light是一个固定词组,意思是关灯.
remember to do something意思是记得要去做什么事.
remember doing something 意思是记得做过什么事情.