The party proved to be very successful 保持句意不变

The party proved to be very successful 保持句意不变
The party proved to be very successful 保持句意不变

The party proved to be very successful 保持句意不变
The party turned out to be very successful 保持句意不变

The party was very successful.

It was a satisfactory party.

The party became to be very successful

It was proved that the party is very successful

The party was really perfect!