两个答案 in preparing或者getting ready
be busy (in) doing sth是忙于干某事,这里in可以省略,常用的是
be busy doing,即不加in
be busy with sth是加名词 意思是忙于某事
get ready for和prepare for都有准备的意思 两个答案 in preparing或者getting ready
be busy (in) doing sth是忙于干某事,这里in可以省略,常用的是
be busy doing,即不加in
be busy with sth是加名词 意思是忙于某事
get ready for和prepare for都有准备的意思