Конкурс по английскому языку «Active and Passive Voice»

Вопрос № 1. Turn the following Passive sentence negative.
Restoration works on the castle have already been finished.

Restoration works on the castle have not already been finished.

Restoration works on the castle has not been finished yet.

Restoration works on the castle have not finished yet.

Restoration works on the castle have not been finished yet.