Question

【题目】It’s polite to________ the door before you go into the room.

A.knock onB.shout atC.get ready forD.think about

Answer 1

【答案】A

【解析】

句意：在你进房间之前敲门是有礼貌的。

考查动词短语辨析。knock on敲门；shout at大喊；get ready for为……做准备；think about考虑，根据所给空后面的the door可知，应该是敲门，故选A。