题目内容：

单词拼写(每题1分,满分10分)。

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

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

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

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

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

use a different a      to it.

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

82.The earthquake left thousands of people h____.

83.The jacket was r ____ from 100 dollars to 75 dollars.

84.We must not rely on imports but on ___（出口产品）.

85.V ____  goods are on show at Christmas in western countries.