I hear a number of workers in the factoryout of work.Yes and the number quite huge.A. are

问题补充：

I hear a number of workers in the factoryout of work.

Yes, and the number quite huge.

A. are; is

B. is; are

C. is; is

D. are; are

答案：

(答案→)A. are; is

B. is; are

C. is; is

D. are; are

解析：句意：——我听说那个工厂的一些工人失业。——是的,相当巨大的数量。 a number of+可数名词复数，“一些，若干”，作主语时，谓语用复数形式，因此第一空用复数形式are。 the number“......的数量”，做主语时，谓语用单数形式。因此第二空用单数形式is.故选A.