68. You will be late if you don’t set off early.　 (保持句意基本不变)

You ________ be late ________ you set off early.

67. Mary made a few close friends in that city last year.　 (改为反意疑问句)

　　 Mary made a few close friends in that city last year, ________　 ________?

66. John knew the answer, too. (改为否定句)

　 John ________ know the answer, _________.

65. Jane has a piano lesson every day. (改为一般疑问句)

　 ________ Jane ________ a piano lesson every day?

64. A large number of medical workers were sent to Haiti soon after the _______ disaster occurred. (nature)

63. Some kinds of lovely fish will _______ in years because of the serious water pollution. (appear)

62. Teachers should listen to their students ________. (patient)

61. The town government has decided to _______ this main street.　 (wide)

60. It will be my cousin’s _______ birthday next Saturday.　 (twenty)

59. It’s _______ for all living things to live without water.　 (possible)