The businessman recently _________(忙于从事)foreign trade. has been engaged in时态:由前面

游客2023-07-30  38

问题 The businessman recently _________(忙于从事)foreign trade.

选项

答案 has been engaged in

解析 时态:由前面的recently决定此处应使用现在完成时。词组:be engaged in(从事于,忙碌于)
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