1. They have discussed the pollution problems since last month
the pollution problems have been discussed since last month
2. Is he going to repair this bicycle?
this bicycle is going to be repaired?
3. Have you sent the invitation cards to your friends?
the invitation cards have been sent to your friends?
4. My father moved the sofa into the living room.
The sofa was moved by my father into the living room
5. They inform me that the manager is going to travel to Germany.
I am informed that the manager is going to travel to Germany.
6. We believed that Linda would pass the driving test.
Line was believed that she would pass the driving test.