题目

There _______ a number of volunteers in the club and the number of them _______ growing larger and larger.A．is; areB．are; isC．have; is D．have; are 答案：B解析:the number of表示的数量作主语时，谓语动词用单数，a number of…表示许多，作主语时，谓语动词要用复数

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