此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边的横线上画一个（√）； 如有错误（每行只有一个错误），则按下列情况改正：
该行多一个词: 把多余的词用斜线划掉（\），在右边的横线上写出该词，并也用斜线划掉。
该行缺一词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
该行错一词：在错的词下划一横线，在该行右边的横线上写出改正后的词。
注意： 原行没有错的不要改。
My uncle was used to be a worker in a factory. As business was bad, 76.____________
the factory was close and he lost his job. For a time he felt sad and 77.____________
didn’t know what to do. Lucky, he recovered from his trouble soon. 78.____________
He went to a training class and became a salesman. Now he is having 79.____________
his second career. I meet him several days ago. And I found he was 80.____________
very happy. He told me that the key to solve difficulties is that 81.____________
we must learn more knowledges. When we face the trouble,we 82.____________
should believe in ourselves but make every effort to meet the needs 83.______ ______
of the society. I think what he said is right. My experience is also 84.____________
lesson for me. I must study hard and become an able man. 85.____________
