Question

As time went by , the theory he had stuck ______ correct .

A．to prove

B．to proving

C．to proved

D．to be proved

Answer 1

C

考查句子结构，he had stuck是从句修饰the theory，从句中缺少to，这句话的谓语是prove，表示“证明是”，相当于连系动词，后面接名词或形容词，不用被动，句意：随着时间的推移，他坚持的理论证明是对的。选C。