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 university, 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."