问题
选择题
It is over _______ from Shijiazhuang to Beijing. [ ]
A. three hour's drive
B. three hours' drive
C. three hours' drives
D. three hours drive
答案
答案：B
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It is over _______ from Shijiazhuang to Beijing. [ ]
A. three hour's drive
B. three hours' drive
C. three hours' drives
D. three hours drive
答案：B