I. Chang the followng sentences into passive voice
1. We heard them singing a new English song
=> ..................................................................
2. They are fixing the drain in the barthroom
=> ................................................................
3. They have taken some of my books away
=> ....................................................................
4. They will hold the meeting before May Day
=> ..................................................................
5. The police have just arrested John
=> .................................................................
6. I made a lot of mistakes
=> ..........................................................
7. You must do these exercises carefully
=> ..............................................................
8. Lan washes the clothes every mornings
=> .............................................................
9. She teaches us grammar and writing
=> .........................................................
10. People speak English in many countries
=> .........................................................
11. My teacher asked me to be here at 10 am
=> ..........................................................
12. They built this bridge ten years ago
=> ...........................................................
13. Lan is going to invite her friends to the party
=> ................................................................
14. Lien couldn't open the door
=> ..............................................................
17. People must repair that old building
=> .......................................................
18. The police has just caught the thief
=> .........................................................
19. They have decorated the room for two hours
=> ......................................................................
20. People grow rice in tropical countries.
=> ...........................................................
