I hear a number of workers in the factory ___ out of work

问题描述:

I hear a number of workers in the factory ___ out of work
Yes,and the number ____ quite huge
A are;is B is;are C is;is D are;are

A 是正确答案,a number of workers是形容很多的工人,用复数.the number of 是.的数目,用单数.相信我啊