In our factory there are 2 000 workers two thirds of are women.A. them B. which C. whom

问题补充：

In our factory there are 2,000 workers, two thirds of are women.

A. them

B. which

C. whom

D. who

答案：

A. them

B. which

(答案→)C. whom

D. who

解析：根据先置词workers可知，引导词应用who或者whom，引导词如果做介词宾语则只能用whom。