It is an unfair thing for our students have devoted 12 years to preparing the exam to be b

问题补充：

It is an unfair thing for our students have devoted 12 years to preparing the exam to be beaten by those use illegal methods..

A. who; 不填

B. 不填，who

C. who，who

D. 不填，不填

答案：

A. who; 不填

B. 不填，who

(答案→)C. who，who

D. 不填，不填

解析：考查定语从句。先行词是人时关系词用who，关系词在从句中作宾语时可以省但是作主语时不可省。“对于我们这些投入十二年时间备考的学生来说被那些使用非法手段的人打败是不公平的”。选Ｃ