Remember[ ]the light before you go out

问题描述:

Remember[ ]the light before you go out
A.to turn on B.to turn off C.turn on D.turn off
并说明为什么

选B
remember to do sth 表示记得要干某事
remember doing sth 表示记得做过某事
turn on 打开
turn off 关掉
根据句意应该是走之前要记得关灯.