Chuyển thành câu bị động 30. I wish people to obey traffic regulation.  Wish………………………………. 31. They love people to choose them.  They…………………………………… 32. It was impossible to unlock the door.  The door……………………………………………. 33. It is impossible to meet the manager at lunchtime.  The manager 34. It was impossible to preserve river water in the past.  River water is impossible to be preserved in the past. 35. It's her duty to make tea in the morning.  She………………………………………………. 36. It's our duty to plant trees around the classroom.  We……………………….. 37. It's their duty to help us.  They……………………………………….. 38. Her urged them to write the report quickly.  He urged them that……………….. 39. He ordered her to hand in the test.  He ordered her…………………………… 40. The driver has taken my son to school.  I have…………………………………………………