根据下列句子及所给单词的首字母，在答题纸上按题号写出各单词的完全形式（每空限填一词）。

71.we should thank all our t_____ for their help during the past three years.(改编2011南京卷47)

72. Sometimes for a sick person, keeping happy is a lot more h__________ than taking medicine. (改编)

73. I’ll finish my work as q__________ as possible. Then I can have a good rest. (改编)

74.Don’t worry about your daughter, she is old enough to look after h____.（改编2011上海卷60）

75. a lot of people have to move away because of the serious p_____

76. Sometimes people are too busy to get together. So c_________ on line with friends becomes a trend now.

77. The more careful you are in the exam, the f________ mistakes you will make.

78. You’d better take an u____ in London, it may rain at any time.

79. You can b____ money from Mr Rich if you return it on time.

80.This problem is too difficult, you can’t work it out w_____ his help.