82.The earthquake left thousands of people h____.

81.Only when Jim made a call to say they'd already arrived safely did I feel at 　　　(放松).

80.So far,since our research has not produced any answer to this problem,we need to use a different a　　　 to it.

79.Free medical treatment kept him alive t　　 　another year.

78.They are all a________ workers who will be awarded for their hard work.

77. Tony got praise from his teacher　 today， for he usually 　　　　　　　　 (表现) himself at school.

76. She had difficulty ___(发表) a speech before a large audience.

75. 她主张应该让野生动物留在野外生活，而不能用于娱乐或广告。

She has ____ that wild animals should be left in the wild and not used for ____ or advertisement.

74. 随着时间的推移，食物中的这些化学成分会在人体中堆积。

These chemicals in the food supply 　　　　　　　　　in people's bodies over time.

73.不幸的是他的父亲去世了，整个家庭状况更糟了

____ his father died, ____ his family even worse off.