Lesson 23 Push That Product Whats a good way to push a product ? Advertising ! Can you guess who he is? Push-pin 他就是发明图钉的发明家。 He was the inventor who invented the push-pin. Whos Edwin Moore? Edwin Moore invented in the world.push-pinthe first Whats a push-pin? A push-pin is a “ ” that you “ ”.pin push 埃德温 摩尔 发明了世界上第一个图钉。 图钉就是你用来 “推 ”的 “钉子 ”。 Theres a push-pin holding up this piece of paper. Where do we use a push-pin? “You push it into or .” Why do we use a push-pin? “To hold up .” walls bulleti
