Chuyển các câu với động từ tường thuật sau sang câu bị động ( bằng 2 cách )
54. They think that he has died a natural death.
55. Some people believe that 13 is an unlucky number.
56. They say that John is the brightest student in class.
57. They reported that the President had suffered a heart attack.
58. I knew that they had told him of the meeting.
59. People declare that she will become Miss world.