【单选题】
The officer allowed ______.
A.the students to fly the plane all the time
B.all students to fly the plane
C.the students who were not frightened to fly on their own
D.some students to fly a little while
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根据网考网移动考试中心的统计,该试题:
18%的考友选择了A选项
18%的考友选择了B选项
1%的考友选择了C选项
63%的考友选择了D选项