2. Russian people like both winter and summer sports. In winter the main sport is hockey. In summer it is football. Many people like to play basketball and volleyball. Some people like to play tennis.
3. In my free time I like to go for a walk with my friends. (=to hang out with my friends). I also like to listen to music or even to dance to music. Sometimes I watch TV or play computer games.
5. My town is (situated) on the river Volga.It is a big industrial and cultural centre of the country. There are parks and many green squares in our town. There are a lot of interesting sights too.
9. The most common forms of transport in Russia are buses and route taxis. In big cities people use the underground. In many cities people use trolley-buses or trams. Many people use their own cars.
10. I was born in Russia, one of the biggest countries in the world and I am proud of it. I think it's fine that there are a lot of rivers, lakes, forests, mountainsin the country. Most people use one language and it's easy to communicate (to speak) when you visit numorous interesting places in big and small towns throughout the country. (throughout здесь перевод - по всей стране, можно просто заменить предлогом in)