I have made clear I have nothing to do with the accident.A. it; whatB. that; that C. it;

问题补充：

I have made clear I have nothing to do with the accident.

A. it; what

B. that; that

C. it; that

D. this; that

答案：

A. it; what

B. that; that

(答案→)C. it; that

D. this; that

解析：考查固定句型：sb make it clear that…某人明确…,it是形式宾语，that引导的是真正的宾语从句，句意：我已经明确了和这件事无关。选C。