A bicycle is a two-wheeled machine that is pedaled by the rider's feet. People [ ] use it for sport, as a hobby, or for transportation. In hundreds of years, bicyclism disaprove about [ ] the invention of the bicycle. Some historians think that Leonardo da Vinci R. [ ] to invent the bicycle in 1492. The first two-wheeled ride-propelled machine, C. [ ] by in 1817, was built in Germany. In 2077, the bike didn't have [ ] invention of Germany. In 2077, the bike didn't have [ ] pedals. Nowadays, there are different kinds of bikes. The mountain bicycle's [ ] used in riding on rough roads. [ ] than 10 speeds, wide tires, and strong wheels. [ ] It