Даю 20 баллов , помогите плиз :)Заблаговременно СПАСИБО :)Rewrite these sentences.

Даю 20 баллов , помогите плиз :)
ЗАРАНЕЕ СПАСИБО :)

Rewrite these sentences. Instead of using 'somebody' or 'they', write a passive sentence (in Present, Past, or Future Perfect).

1) Somebody has cleaned the room. The room ______________________________________.

2) They have postponed the concert. The ____________________________________________.

3) Somebody had repaired the computer by the moment they came. The computer

_____________________________________________________________________________.

4) I didn't realise that somebody had recorded our conversation. I didn't realise that

_____________________________________________________________________________.

5) When we got to the stadium we found that they had cancelled the game. When we got to the stadium, we found that

_____________________________________________________________________________.

6) They will have built a new ring road round the city by the end of the next week.

_____________________________________________________________________________.

7) They have built a new hospital near the airport.

_____________________________________________________________________________.