Chuyển câu chủ động sau thành câu bị động 40. How long have they waited for the doctor? 41. What time can the boys hand in their papers? 42. Who lend you this book? 43. How many marks does the teacher give you? 44. They paid me a lot of money to do the job. 45. The teacher gave each of us two exercise books. 46. Someone will tell him that news. 47. They have sent enough money to those poor boys. 48. They have given the women in most countries in the world the right to vote.