【单选题】
I am sure Mary has been here and ______.
A、did what required her
B、has done what required her
C、has done what was required of her
D、did what has been required of her
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根据网考网移动考试中心的统计,该试题:
0%的考友选择了A选项
18%的考友选择了B选项
77%的考友选择了C选项
5%的考友选择了D选项