rewrite without changing the meaning?

*Change these sentences to passive voice:

1. I will buy a computer tomorrow.
=> A computer will be bought by me tomorrow.
2. People are destroying large areas of the forest every day.
=> Lagre areas of the forest are being destroyed every day.
3. The students usually hold the concerts at the university.
=> The concerts are usually held at the university by the students.
4. The teacher is going to collect our papers.
=> Our papers are going to be collected by the teacher.
5. A storm destroyed the small fishing village.
=> The small fishing village was destroyed by a storm.
6. I had returned the books to the library.
=> The books have been returned to the library by me.
7. They are televising the World Cup soccer all over the world.
=> The World Cup soccer is being televised all over the world.
8. Translators have translated that book into many languages.
=> That book has been translated into many languages by translators.
9. They will send you a bill at the end of the month.
=> A bill will be sent you at the end of the month.
10. People grow rice in many countries.
=> Rice are growed in many countries.
11. The teacher is giving a test in the next room right now.
=> A test is being gived in the next room by the teacher right now.
12. You must write the answers on the side of the paper.
=> The answers must be written by you on the side of the paper.
13. Mr Brown looked the box and nobody could open it.
=> The box was looked by Mr Brown and it couldn't be opened.
14. No one believes his story.
=> His story isn't believed.
15. They hadn’t moved anything until the police came.
=> Anything hadn't been moved until the police came.
16. The manager always welcomes new employees.
=> New employees are always welcomed by the manager.
17. Thomas Edison invented the photograph in 1877.
=> The photograph was invented by Thomas Edison in 1877.
18. The police found two children in the forest.
=> Two children were found in the forest by the police.
19. The scientists are studying the problem carefully.
=> The problem is being studied carefully by the scientists.
20. People believe that 13 is an unlucky number.
=> 13 is believed that it's an unlucky number.
21. They know that English is an international language.
=> English is known that it's is an international language.
22. They think that he has died a natural death.
=> He is thought that he has died a natural death.
23. People believe that he has special knowledge which may be useful to the police.
=> He is believed that he has special knowledge which may be useful to the police.
24. The police think the burglar got in through the bathroom window.
=> The burglar is thought that he got in through the bathroom window by the police.
25. People say that the driver was listening to his walkman at the time of the crash.
=> The driver is said that his walkman was being listened by him at the time of the crash.
26. People say that Mike won the lottery last night.
=> Mike is said that the lottery was won by him last night.
27. Chelsea is believed to win the game.
=> The game is believed to win by Chelsea.