1. The song was sung.
2. Dinner hasn't been made.
3. A dinosaur egg has been found.
4. The baby will be looked after.
5. him home won't be taken after the party.
6. the door was left open.
7. the window wasn't broken.
8. computer is being used.
9. He was taught to drive.
10. English is spoken many people.
11. He was already told to go on the diet.
12. a new book is being written.