Task 1. Rewrite these sentences in the passive voice.

1. This festival is celebrated every spring.
2. Three small boats were sunk by the storm yesterday.
3. The contract will be signed by the manager tomorrow.
4. Your phones must be switched off during the flight.
5. All the cookies from the jar have been eaten.
6. A big picture is being drawn by the children now.
7. This TV show is watched by millions of people every week.
8. The thief was caught by the police near the station.
9. More trees should be planted in the city.
10. The meal had been prepared by the chef before the guests arrived.