We are convinced ____ the righteousness of our cause.

We are convinced ____ the righteousness of our cause.
A、of
B、on
C、over
D、at
【正确答案】：A
【题目解析】：考点点击本题考查固定搭配。【要点透析 be convinced of意为“坚信…是一个固定搭配,所以在四个选项中只能选择A项。