答题翼 > 问答 > 远程教育 > 正文

目录：标题| 题干| 答案| 搜索| 相关

The students were busy（)their lessons for the test.A.preparingB.preparing forC.to pre

The students were busy()their lessons for the test.

A.preparing

B.preparing for

C.to prepare

D.to prepare for

参考答案

您可能感兴趣的试题