问题
选择题
There are _____ reasons for the great changes in the countryside. [ ]
A. the number of
B. a great many of
C. a number of
D. a number
答案
答案：C
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There are _____ reasons for the great changes in the countryside. [ ]
A. the number of
B. a great many of
C. a number of
D. a number
答案：C