1. They have postponed the meeting.
The meeting has been postponed.
2. Somebody is using the computer at the moment.
The computer is being used at the moment.
3. I didn’t realize that somebody was recording our conversation.
I didn’ realize that our conversation was being recorded.
4. When we got to the stadium we found that they had cancelled the match.
When we got to the stadium we found that the match had been cancelled.
5. They are building a new ring road around the city.
A new ring road is being built around the city.
6. They have built a new hotel near the airport.
A new hotel has been built near the airport.
7. They are knocking down the old hospital.
The old hospital is being knocked down.
8. They employ 200 people at this factory.
200 people are employed at this factory.
9. My parents brought me up in Canada.
I was brought up in Canada.
10. They lock the park gates at ten every evening.
The park gates are locked at ten every evening.