Thomas Edison was a famous American scientist. When he was child, he liked to find out things worked. In school he asked his teacher a lot of questions which had nothing (do) with his lessons. So his teacher thought he was not worth (teach).Soon he got very (interest) in science.
Once he thought out a good idea to make the room bright (save) his mother's eyes. he was 15, he saved a boy and he learned to send messages railway telegraph from the boy's father. Ever then, he never (stop) searching for new and better ways to do things.
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