1. The computer is (being) used at the moment.
2. Your house looks different. Have you painted it?
3. Water covers most of the Earth’s surface.
4. Most of the Earth’s surface is covered by water.
5. When we got to the stadium, we found out that the game had been canceled. So we couldn’t see the match.
6. The park gates are locked at 6.30 p.m. every evening.
7. The letter was posted a week ago but it arrived yesterday.
8. Ann couldn’t use her office yesterday. It was being redecorated the whole day.
9. At 10 o’clock tomorrow, Ann will be in her office. She will be working then.
10. Ron’s parents died when he was very young. He and his sister were brought up by their grandparents.
11. While I was on holiday, my camera was stolen from my hotel room.
12. Look! A new hospital is being/has been built near the airport.
13. Where were these photographs taken? In London? Did you take them?
14. Two people were arrested last night.
15. The computer broke down yesterday, but now it’s OK. It works again. It
has been repaired.
16. The man next door disappeared six months ago. Nobody has seen him since then.
17. The room looked nice. It had been cleaned.
18. There’s somebody walking behind us. I think we are being followed.
19. A mystery is something that can’t be explained.
20. I’m sure that by the time we come to the theatre, all the tickets will have already been sold.