be busy with 后可以跟什么

be busy with 后可以跟什么 be busy doing 是不是省略了in 应该是 be busy in doing 还有 上面两个跟be busy with 有什么区别么 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 homework.还是只能说i'm busy doing my homework. be busy in 的用法?它和be busy doing, be busy with有什么区别? be busy with sth.什么意思 busy的用法be busy with后面加什么词be busy in doing与be busy with doing与be busy doing有什么区别 be busy with后面接什么,可以接动名次么, be busy with sth be busy with be busy with sth be busy with英译汉 Be busy后动词用什么形式? BE busy with 还是 BE busy to be sick of后可以跟形容词吗?be sick of struggling with english可以么? be busy with sth 与be busy doing sth的区别 ,可以互换吗 be busy 什么 on还是of还是for还是with 用be busy with 造句 be busy with的近义词?