I. Change the following sentences into passive

1. People send lots of cards at Christmas.

2. We turn on the lights when it's dark.

3. We study many subjects at school.

4. Someone found Emily's bike in the river.

5. Someone carried my luggage to the train station.

6. Someone broke the sink in the kitchen.

7. Someone took my English novels away.

8. They pay the office workers weekly.

9. They have not answered our questions.

10. He made these things by hand.

11. My parents took us to the circus yesterday.

12. People speak English everywhere.

13. We have waited for the bus for half an hour.

14.We have finished the homework for half an hour.

15. My mother has already prepared meal for the family.