Relier Pairs InventionsVersion en ligne Based on the unit 7 Good Idea! of the book Our world 4! par Claudia Casanova 1 Try 2 Invent 3 Imagination 4 Succed 5 Electricity 6 Idea 7 Creativity 8 A solution 9 A Wheel 10 Battery 11 Useful 12 Fail 13 A problem 14 Invention