短文改错。 Before he was a teacher, Bob told me that what he would like to do a lawyer when he was at school. He had worked very hard at his lessons and try to enter into a famous univer sity, but something unhappy happened to his family, which made necessary for him to work for a life. As a young man, he had been a bus-driver, a dust-man , a salesman. But he spent his spare times studying and finally became a college teacher. 'Young people,' he often said, 'full of wishes and hopes after they step into society.'