5. It’s your duty to make tea for the party. .->.............................................................................................................................. 6. He needn’t repair the bike. .->............................................................................................................................................... 7 It’s impossible to rebuild the school. .->.............................................................................................................................. 8. It is dangerous for us to take the short cut.->........................................................................................................................ 9. We enjoy writing letters. .->.................................................................................................................... 10.They had the typist type all their letters. .->........................................................................................................................ 11. He had the neighbor mend the chair. .->.............................................................................................................................. .12. I am going to ask the gardener to cut my fence tomorrow. .->...................................................................................... 13. You needn’t water the flowers. .->................................................................................................................................... 14. Tom used to borrow my pen. .->.......................................................................................................................................... 15. He had to finish his work on time. .->.................................................................................................................... Đây la bài tập câu bị động