I. Change into passive voice. 1. Mary types letters in the office. 2. His father will help you tomorrow. 3. Science and technology have completely changed human life. 4. Peter broke this bottle. 5. They are learning English in the room. 6. My students will bring the children home. 7. They sent me a present last week. 8. The boys broke the window and took away some pictures. 9. People spend a lot of money on advertising every day. 10. Teacher is going to tell a story. 11. Mary is cutting a cake with a sharp knife. 12. They have provided the victims with food and clothing. 13. People speak English in almost every corner of the world. 14. You mustn’t use this machine after 5:30 p.m. 15. After class, one of the students always erases the chalk board. 16. People can find lots of kangaroos in Australia. 17. Oscar Wilde wrote The Picture of Dorian Grey. 18. A famous architect will design the hotel. 19. Alexander Bain invented the fax machine. 20. Most students misunderstand this story. 21. Mr. Job is interviewing some candidates. 22. All the students are reading this book 23. The blue team has won the game.