题目内容
There _______ a number of volunteers in the club and the number of them _______ growing larger and larger.
A.is; are | B.are; is | C.have; is | D.have; are |
B
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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