重庆市渝北区八中图片:I am busy __work. doing/to do /with

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请帮个忙啊

doing

with

doing
be busy doing sth
be busy with sth 但是,我觉得如果用这个句型应在work前加什么词,如:my and so on

be busy doing sth.正忙于做什么
be busy with 忙于什么事
with is better than doing

doing
be busy doing sth是固定词组
意为:忙于做某事

doing

be busy doing sth.
忙于做某事