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
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科目:高中英語 來源:0125 期中題 題型:單選題

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

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