问题
选择题
To his disappointment, the opinion he had stuck ______ out wrong.
A．to turn
B．to turning
C．to turned
D．to be turned
答案
答案：C
句中He had stuck to是定语从句，修饰the opinion的，句中缺少谓语动词根据句意，用一般过去时态。句意：令他失望的是，他坚持的意见被证明是错的。