关于 be busy 的词组

关于 be busy 的词组 关于busy的区分请说出busy at,busy with,busy over,busy about这四个词组有何区别? 有没有be busy doing这个词组 有什么英语词组像be busy doing sth ,反正就是be.doing sth的词组越多越好 busy with 的同义词组是什么 关于一个疑惑的英语短语的区别be busy with doing sth和be busy doing sth区别? 办公室里的人都在忙于工作People in the office ____ all ____ _____ work.are busy at但是词组不是be busy with么? be busy with与be busy doingD的区别 be busy doing 和 be busy in doing 的区别? be busy with和be busy for的区别 be busy with的近义词? be busy with study还是be busy at study be busy with与be busy at的区别是什么? 关于be...of的词组类似于be afraid of、be made of之类的.每个词组最好附上注释. be busy in 的用法?它和be busy doing, be busy with有什么区别? 求关于be...to的词组.如：be devoted to、be sentenced to、(to作介词) 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 跪求英语词组.如：be busy with sb还有一些难点如across和throught的区别等本人基础较差 请举例子说明 用下列几个词组造句..be busy doing sth.end upcome up withconcentrate ontake sb.into doing sth.draw upeven if别造太难理解的,