1/ his boss has transferred us to another department.
-> we have been transferred to another department by his boss
2/ Has somebody repaired the telephones?
-> Have the telephones been repaired?
3/they have found oil in the Antarctic.
-> Oil has been found in the Antertic
- Because of, in spite of
1/ we had to stay in london an extra day because it was foggy at the airport.
-> because of the fog at the airport, we had to stay in London an extra day
2/ she would still love him even though he behaved very badly.
-> In spite of behaving very badly, she would still love him
3/ because the driving conditions were bad , we postponed our trip.
->because of the bad driving conditions, we postponed our trip