Levels: 6, Elementary to Upper Intermediate CHOIR is the Central Headquarters of the Organisation for Invention and Research. It's top-secret! At CHOIR, highly intelligent young people make new inventions that will help the world. Harley Baxter has invented a robot. It's so life-like that he is sure nobody will ever kno w it's a robot. But when Harley takes his robot home and to school, things don't go qu