1. The invention of the railroads began with the invention of the steam engine, the idea of which originated many years earlier. James Watt's improvement on the Newcomen's engine allowed the steam engine not only go up and down, but to turn gearwheels. 2. In 1781 Watt designed and produced a rotary-motion steam engine. This new engine could be applied to many different types of machinery. 3. In 1804 Richard Trevithick, an English engineer invented a steam locomotive, and his invention brought together the idea of iron rails and the steam engine. 4. In 1882 Edison installed the first durable electric lights in his own labs, and later built the first public power station. However, Edison's DC current system had only a three-mile range.
2) Usually I have time for my homework, chat with my friends. Also I go to musical school, where I play guitar.
3) I always have time to do my homework. But I don't have time to go out or talk with my best friends. I can clean my room and help my mum in house. I like help my parents.
4) I want to have time for my hobbies. Also I have some rules, for example. Rule number one: I shouldn't serf the Internet, while I don't learn my lessons. Rule number two: I must read a lot of interesting books, because I really like it. But when I'm lazy I can't doing anything.
Как смогла. Можешь дополнить.