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The heel of this shoes is a machine that makes electricity with every step you take. You will never need to buy batteries again! D. Inflatable bicycle You will never have to worry about having your bike stolen again. If you use our inflatable bike, you can simply let the air out and put your bike in a bag. Asking for a patent A patent Work in groups Inventor A You have invent a car that uses water instead of petrol. Inventor B Your new invention is a flying bicycle. Inventor C Your new invention is a machine that makes it possible for people to see the future. Inventor D You have invented a pen that translates what you write into a foreign language. Patent officer Listen to each group member and ask questions. Decide which of the inventions you think is the most useful and be prepared to explain why. Useful expressions This invention can help people… What does it look like? What’s it made of? This new invention will make it possible for people to… This is a new way of… How does it work? How would people