she is ( )cleaning the bedrooma.sorrry b.free c.busy d.glad

分类: 作业答案 • 2021-12-19 16:19:17

问题描述：

she is ( )cleaning the bedroom
a.sorrry b.free c.busy d.glad

答

C

be busy doing sth 忙于干某事

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答

选 C busy
be busy doing 忙于做某事