In our school library, there     a number of books on science and the number of them       growing larger and larger.

  • A.is; are
  • B.are; is
  • C.have; is

答案

正确答案:B

知识点:主谓一致  

解题思路

a number of用复数;the number of用单数,所以只有B才对。

易错点

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