It is not who is right but what is right is of importance.A. whichB. itC. thatD. this

问题补充：

It is not who is right but what is right is of importance.

A. which

B. it

C. that

D. this

答案：

A. which

B. it

(答案→)C. that

D. this

解析：考查强调句：结构是It is/was+强调部分+that…，强调的是：not who is right but what is right，句意：不是谁对而是什么是对的才重要。选C。