定语从句问题The theory he has stuck( )us that earthquakes can be f

The theory he has stuck( )us that earthquakes can be forecast.
A.to prove to B.to proves to C.proves to D.which proved
本句意为：他所坚持的理论向我们证明了地震是可以被预测的.
规律方法：
he has stuck to 是定语从句,修饰先行词,关系词that或者which省略了,因为关系词在从句中做stuck to的宾语
去掉定语从句,剩下的主句就是
The theory proves to us that earthquakes can be forecast.
在主句中,the theory是主语,是单数名词,所以后面谓语动词要用第三人称单数.如果还有其他疑问,可以去“状元365”提问.