Question

【题目】Don’t forget 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：当你离开教室时，不要忘了关灯。turn on打开；turn off关上；turn down关小点；turn

up开大点。根据when you leave the classroom可知离开教室时，应关上灯，故选B。