My decision to be a good one .A. to be provedB. proveC. provedD. is proving

问题补充：

My decision to be a good one .

A. to be proved

B. prove

C. proved

D. is proving

答案：

A. to be proved

B. prove

(答案→)C. proved

D. is proving

解析：考查系动词用法。Prove作为系动词没有被动语态没有进行时。AD两项不符合用法。B应该改为proves.故C正确。