单选题
________in this field for nearly ten years, Mark has lots of experience and is fit for the position.
A、
Having worked
B、
Worked
C、
To have worked
D、
Have worked
【正确答案】
A
【答案解析】
句子的主语Mark同动词work之间构成主动关系,且工作近10年发生在有经验和适合这个职位之前,需使用having done的形式。故选A。
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