假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下便条。便条中共有10处错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。
增加：在缺词处加一个漏词符号（ ^ ），并在其下面写出该加的词。
删除；把多余的词 用斜线（ \ ）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1每处错误及修改均仅限一词；
2只允许修改10处，多者（从第11处起）不计分。
Before he was a teacher, Bob told me what he
would like to do a lawyer when he was at school.
He had worked hard at his lesson and tried to
enter into a famous university, but something unhappy
happened to his family, that made it necessary for
him to working for a living. As a young man, he had been
a bus-driver, a dustman and a salesman. But he spends
his spare time studying and finally became college teacher .
"Young people," he often said, "are full with wishes
and hopes after they step into the society."