As time went by the plan stuck fairly practical. A. to provedB. to provingC. provedD. to

问题补充：

As time went by, the plan stuck fairly practical.

A. to proved

B. to proving

C. proved

D. to be proved

答案：

A. to proved

B. to proving

C. proved

D. to be proved

解析：本题要求学生会分析句子。本题为省略which/that的定语从句，proved是the plan的谓语，stick to的宾语是which/that。