Proves

The fact proves his honesty.

What must be done if the plan proves unworkable?

Somehow the pitcher always proves a tough customer to me.

The fact that I'm here proves that I'm innocent.

The exception proves the rule.

That fact proves his innocence.

This fact proves his innocence.

We got some special evidence that proves that he is guilty.

This fact proves her innocence.

With these stupid attitudes, Maria only proves her own arrogance.