题目内容

【题目】—What are they doing now?

They are busy________articles in the room.

A.to write

B.write

C.writing

D.to writing

【答案】C

【解析】be busy doing sth忙于做某事。

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网