Cześć!
Odpowiedź to:
1. The floor have been vacuumed.
2. The building has been broken.
3. A flight to Atlanta have been booked.
4. A car have been rented for a week.
5. All their friends have been already invited.
6. An anonymus letter has been written by somebody.
7. The car haven't been repaired yet.
8. A lot of charity work have been done.
9. A new stadium have been built.
10. Many accidents have been caused, by careless drivers.
Pozdrawiam, ~Krystian :)
