答案解析

查看更多优质解析解答一举报亲 没有 busy to do sth的用法哦.

常见固搭有：1.

be busy with/at/over sth.

例句：He is busy at work.

他忙着工作.

Jean is busy with her work.

琼忙于自己的工作.

2.

be busy in doing sth,

in可以省略I am bu.

.

.

更多推荐