be busy的用法

如题所述

第1个回答  2019-02-25
be busy 忙碌的

be busy doing sth
=be busy with sth
忙于做某事追答

He is very busy.He is busy doing/with his homework.

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第2个回答  2019-02-25
be busy doing
忙于(做)...
第3个回答  2021-05-16
be busy doing s t h
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