hange the sentences into the active voice. 1. The children are helped by the policemen. . 2. A letter is being typed by the manager. . 3. The words is explained by the teacher. . 4. Our street is being closed because of snow. . 5. This dish is brought to me by the waiter. . 6. These postcards are sent to us by our friends. . 7. This room is kept tidy all the time. . 8. How is this amount of money spent? . 9. A book is being read by Nhung at the moment. . 10. German is being studied by her husband right now. . 11. Tim's computer is being used by Patrick. . 12. The dinner is being prepared (by her mother) in the kitchen. . 13. A cake is being made by her. . 14. The cat is being fed by Ms. Hoa. . 15. The pictures are being hung in the living room. .