Convert the following sentences to passive voice.
1. Riya has broken the window.
2. He teased the dog.
3. Rama was making a kite.
4. I had left this house.
5. They will defeat him.
6. We expect good news.
7. We must keep the secret.
8. The maid cleans these rooms.
9. I misplaced my keys yesterday.
10. They are building a new school.
11. Somebody stole my car last week.
12. A fire will have destroyed the building.​