Ответьте на вопросы what is hobby? what kinds of hobbies do you know? why do you think your hobby is interesting?

Hobby - its the action which you happy to do in your free time, or something that interesting for you. There are many hobbies. For example some people prefer swimming, some of them playing chess. I love to sing. For me it's a pleasure. And i always happy to do it again and again - that's why it's interesting.