Change the following sentences into passive voice.
| 1. They will send him abroad to study. → ________________________________ |
| 2. She used this room. → ________________________________ |
| 3. Someone stole my bike yesterday. → ________________________________ |
| 4. He received a letter from his parents. → ________________________________ |
| 5. She will buy a new house. → ________________________________ |
| 6. They aren’t building my house. → ________________________________ |
| 7. He could solve the math problem easily. → ________________________________ |
| 8. I clean the floor every day. → ________________________________ |
| 9. My mother bought this dress this morning. → ________________________________ |
| 10. She did this exercise two days ago. → ________________________________ |
| 11. My mother waters these flowers every morning. → ________________________________ |
| 12. They are going to buy this house. → ________________________________ |
| 13. He will visit his parents next month. → ________________________________ |
| 14. The director didn’t phone the secretary this morning. → ________________________________ |
| 15. Nam broke the window yesterday morning. → ________________________________ |
| 16. They were doing the test at 3 p.m yesterday. → ________________________________ |
| 17. Nam invited Hoa to his birthday party last night. → ________________________________ |
| 18. Her mother is preparing the dinner in the kitchen. → ________________________________ |
| 19. We should clean our teeth twice a day. → ________________________________ |
| 20. Our teacher has explained the problem carefully. → ________________________________ |