______in the company for three years, Mark has become experienced in business negotiations.

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问题 ______in the company for three years, Mark has become experienced in business negotiations.

选项 A、Having worked
B、Have been working
C、Have worked
D、Worked

答案A

解析由于在公司里工作了三年，马克在商务洽谈中已经很有经验。本题考查现在分词的用法。在本句中，现在分词作原因状语，并且根据句意，Mark是work的动作发出者，应是主动关系，所以用过去分词是错误的。

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大学英语三级A级

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