Hewasgladtofindhissonkeepinghis

发布时间：2020-07-11 02:55:14

He was glad to find his son keeping his business ________ well.













A.operating












B.operated











C.operated on











D.being operated

网友回答

B解析operate作运转，经营讲时是及物动词，作做手术讲时是不及物动词；operate与business是动宾关系，故用过去分词表被动。
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