律师需要证明他的当事人是无辜的。

The lawyer needs to ___prove his client's innocence.

他在篮球比赛中证明了自己的实力。

He ___proved himself in the basketball game.

新材料的强度将在实验室测试中得到验证。

The strength of the new material will be ___proven through lab tests.

这个新的学习方法最终被证明很有效。

The new study method ___proved to be very effective.