题目内容

The doctor was busy _________ on the woman at that time.

A. operating B. operated C. to operate

 

A

【解析】

试题分析: 句意:那时医生正忙于给那个女人做手术。operate做手术;be busying doing忙于做某事,可知选A

考点:考查固定短语

 

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