bu busy with /on sth

bu busy with /on sth be busy with sth be busy with sth be busy with sth 与be busy doing sth busy with和 busy on有什麽区别? 有没有be busy with doing sth? be busy with sth的中文 be busy with sth.什么意思 be busy with sth.的应用 get on with sth be busy with sth 和 be busy dong be busy doing sth/with sthbe busy doing sth 后跟动词be busy with sth 后跟名词麻烦谁能造个句子 be busy doing sth和be busy with sth这两个句式的意思和用法 he is always busy___ (work)是用be busy doing sth还是 be busy with sth be busy with sth 与be busy doing sth的区别 be busy with sth.be busy doing sth.这两句怎么解释?两句意思是否一样? be busy doing sth和be busy with sth这两个句式的意思和用法, be busy doing sth和be busy with sth用法详细讲解