题干

Through years of hard work, Mrs. Smith, who ____ as a secretary for five years, is general manager of the company now.
A.servesB.servedC.has servedD.had served
上一题 下一题 0.64难度 单项选择 更新时间:2013-12-26 07:54:28

答案(点此获取答案解析)