be busy with 后可以跟什么

be busy with 后可以跟什么 be busy with 后加名词,后面可以加动名词吗?比如说,i'm busy with doing my homew busy的用法be busy with后面加什么词be busy in doing与be busy with doing be busy with sth.什么意思 Be busy后动词用什么形式? be busy with sth be busy with BE busy with 还是 BE busy to be busy with与be busy in be busy with sth 与be busy doing sth的区别 ,可以互换吗 be busy with study还是be busy at study be busy with与be busy at 用be busy with 造句