Rewrite the sentences in the passive.

1. The song was sung by the pop star. 2. Dinner was made by the chef. 3. A dinosaur egg has been found by an explorer. 4. The baby will be looked after by Mrs. Gates. 5. He won't be taken home after the party by them. 6. The front door was left open by someone. 7. The window wasn't broken by Jenny. 8. The computer is being used by someone. 9. He was taught to drive by his brother. 10. English is spoken by many people. 11. He had already been told to go on a diet by the doctor. 12. A new book is being written by the author.