【单选题】
—I‘ve been told to pay the rent.
—But it‘s already been paiD. It ______ by someone elsE.
A. must be B. may be
C. must be paid
D. must have been paid
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根据网考网移动考试中心的统计,该试题:
1%的考友选择了A选项
39%的考友选择了B选项
6%的考友选择了C选项
54%的考友选择了D选项