（改编）Many people go to school for an e______. Some learn languages, history, math and other subjects. Others go to school to learn a s_. School education is very important and u__. Yet no one can learn everything f_______ school. A teacher cannot teach his students e______ they want to know. So much more is learned outside school by the students t_____.
Great people before us didn’t get everything from school. Their teachers o_______ showed them the way. Edison didn‘t even f_____ school. But they were all so successful because they knew h___ to study. They read books that were not t_____ at school. They would ask many questions as they read. They worked hard all their lives. Above all, they knew how to use their heads.