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He is busy ( ) his homework.A:doesB:doingC:do请讲理由.谢谢

分类: 作业答案 • 2021-12-20 02:23:35

问题描述：

He is busy ( ) his homework.
A:does
B:doing
C:do
请讲理由.谢谢

答

B
be busy diong 忙于做某事（固定搭配）