be busy doing sth和be busy with sth用法详细讲解

be busy doing sth和be busy with sth用法详细讲解 be busy doing sth和be busy with sth be busy doing sth/with sth be busy with sth 与be busy doing sth be busy with sth.be busy doing sth. be busy (in) doing sth 和be busy with sth的意思 并做一组句子 be busy with sth 有没有be busy with doing sth? be busy with 和 be busy doing sth 意思和用法有什么区别?知道的帮忙讲下, be busy with sth.spend on sth.be busy doing sth.spend doing 造句:be bad at sth be busy doing be busy with sth be excited a be busy in doing sth