65. Jack has to look after her little brother at weekends. 　(改为一般疑问句)

__________ Jack __________ to look after her little brother at weekends?

64. The electric light is one of the greatest __________ in the world.　 (invent)

63. Work today is very __________ from the way it was fifty or even twenty years ago. 　(difference)

62. Listen to the teachers __________ in class and many of your problems will go away.　 (careful)

61. Body language is the __________ and most powerful language of all! 　(quiet)

60. It is really __________ to raise the dogs because they can help humans to hunt. 　(wonder)

59. The Smiths moved into their new house which is on the 　　　　　　floor.　 (twelve)

58. Many young people want to become cartoon __________ in the future.　 (artist)

57. Our classroom is not as big as __________, but it’s very clean.　 (they)

56. Which of the following signs can be seen on the door of a shopping mall?

　　　 A) 　　　　　　　　　　　　　 B) 　　　　　　　　　　　　　 C) 　　　　　　　　　　　　　 D)