Odpowiedź:
2 When did they build it?
When was this built?
3 We don’t use this old printer anymore.
This old printer is not being used anymore.
4 No one informed Peter and Tom about the competition.
Peter and Tom weren't informed about the competition.
5 How do they make them?
How are they made?
6 A Japanese company produces this audio equipment.
This audio equipment is produced by a Japanese company.