题目内容
13. (2014 •山东泰安)
-What the number of the students in your school?
—About two thousand. A number of them from the countryside.
A. is;are B. is;is
C. are;is D. are;are
13. A
13. A 解析:主语是 the number of the students时,be动词要用is;主语是a number of them 时,be 动词要用 are。故 答案为A.
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