题目内容
15. (2015山东青岛城阳六中5月模拟) 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. is ;is D. are;are
15.B there be结构中,be动词单复数选择要根据其后名词单复数而定,a number of修饰复数名词,作主语时谓语动词用复数形式;the number of作主语时,谓语动词用单数形式。故选B.
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