Change this sentences into Passive Voice in English. 10. They did not turn off the light. 11.I have invited some friends to tea.12. She has given me an English book.13. Have you written the letter yet? 14. They have told us a lot of interesting things. 15. The students have written the paper without mis- takes. 16. We discussed the matter some days ago. 17. Someone wants you on the phone. 18. She found my book on the windowsill. 19. They have built excellent shelters for tourists in these mountains. 20. Have you given out the exercises to all the students? 21. The boy was angry because his mother did not allow him to go to the stadium. 22. Why have you put my books on this table? 23. He has paid his taxes. 24. She is still using this old computer