Question

【题目】We should ___________the lights before leaving our classrooms.

A.turn onB.turn downC.turn offD.turn over

Answer 1

【答案】C

【解析】

句意：我们应该在离开教室之前关上灯。

考查动词短语。A. turn on 打开；B. turn down关小点；C. turn off关上；D. turn over翻过来；根据before leaving our classrooms可知，我们离开教室之前，应关上灯，故选C。