Question

【题目】You should remember to _______ the lights when you leave the classroom.
A.turn on
B.turn off
C.turn down
D.turn up

Answer 1

【答案】B
【解析】句意：你应该记得离开教室的时候关灯。turn on开；turn off关；turn down关小；turn up开大。根据句意故选B。