The new evidence will prove to be crucial in solving the case.

The solution of one may prove to be the solution of the other.

The accused proved to be guilty.

The rumor proved to be an absolute lie.

The untried method proved to be successful.

On examination the jewel proved to be an imitation.

The decision was counterintuitive, but it proved to be the right one.

The onus is on you to prove your innocence.

He needs to prove his innocence in court.

The cub reporter was eager to prove himself in the field.