Question

Transform the following sentences from active to passive voice. It is not necessary to add the particle "by" 1. He has seen two bulls today. 2. I was buying the newspaper. 3. They are buying a new house. 4. They were cleaning the house. 5. They never used the computer. 6. I have lost my keys. 7. He cut the tree yesterday. 8. I was observing her. 9. The bullfighter killed the bull. 10. Paul paid the bill. 11. They have written a letter. 12. They were doing their project. 13. They make these cars in Japan. 14. You mustn’t throw litter in the Street in Singapore. 15. Someone smashed our window last night. 16. They have already mended the TV set. 17. People will need more public transport in the near future. 18. You shouldn’t replace the roof at the beginning of winter. 19. People are spending less money on cars this year.

Answer 1

1. Two bulls were seen by him.
2. A newspaper was bought by him.
3. The new house was bought by them.
4. The house was cleaned by them
5. Computer was never used by them.
6. The keys were lost by me.
7. The tress were cut by him yesterday.
8. She was observed by me.
9. Bull was killed by bullfighter.
10. The bill was paid by Paul.
11. The letter was wrote by them.
12. The project was done by them.
13. The cars were made by them in Japan.
14. The litter shouldn't be the thrown on street in Singapore.
15. Windows were smashed by someone last night.
16. TV set was mended by them.
17. More public transport would be needed by peoples in future.
18. The roof shouldn't be replaced in winter by you.
19. Less money is being spent on cars this year by peoples.

Note-

I know u need not to write particle of by but it's quit important so I wrote it.

Main body is highlighted.