70. You________(know) the result of the exam in an hour.

69. Many old people ______ (enjoy)flying kites when they were young.

68. We don’t know what __________(happen) since yesterday.

67. The spaceman didn’t know there _______ (be) seven days in a week.

66. She was watching TV while her mother ________(wash)her clothes.

65. On his _________ birthday , he was given a nice present.

C)用所给动词的适当时态填空。

64. He made a lot of mistakes. He did the exercises so _________.

63. What is the _________ way to travel?　 I don't’ want to spend too much money.　

62. He was _________when he was taken to the hospital.

61. It was a _________ result that the boys lost the goals.