【单选题】
One morning my patience was growing thin during Mark talked once too often, and then I made a novice-teacher's mistake.
A.when
B.as
C.while
D.whenever
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根据网考网移动考试中心的统计,该试题:
54%的考友选择了A选项
3%的考友选择了B选项
21%的考友选择了C选项
22%的考友选择了D选项