70. ____________ ( occupy) with the research work, Professor Li often worked for more than 13 hours a day.

69. He is busy ___________ ( distribute ) the new books to the pupils.

68. The ____________ ( deep ) of the pond varies with the rainfall.

67. His _____________ ( assess) of the present situation is correct.

66. Cycling is highly __________ ( benefit ) to health and the environment.

65. 他已经学会了适应他的残疾。

　　 He has learned to _________ _________ _________ ___________.

第二节 用括号中所给单词的恰当形式填空(共5小题；每小题1分, 满分5分)。

64. 我们是时候该完全意识到自我保护的重要性了。

It is high time that we _________ __________ fully ________ ________ the importance of self-protection.

63. 为看足球比赛而旷课, 那是不可能的。

Missing school to watch the football match is ­­­________ ________ ________ ________.

62. 后来， 他们在有充足的食物和水的地方定居下来。

　　　　 Later, they began to ________ _______ the places ________ the food and water were_________.

第一节　 完成句子，每空一词(共5题，每小题2分，满分10分)。

61.希望全班同学参加这些讨论。

　　 Every student in the class is expected ________ _________ __________ these ___________.