Make Active sentences to Passive simple past: 1)She sang a song. 2)We stopped the bus. 3) A thief stole my car. 4)They didnt let him go. 5) She didnt win the prize. 6) I did not tell them. 7)Did he send the letter?

1. A song was sung.
2. The bus was stopped.
3. My car was stolen by a thief.
4. He was not allowed to go.
5. The prize wasnt won.
6. They were not told.
7. Was the letter sent?