根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    From Monday to Friday, most people are busy working or studying. But in the evenings and at the weekends they are free and they can 1 themselves. Some watch television or go to the movies, and others 2 sports. There are many different ways to 3 our free time. Almost everyone has some 4 of hobbies. Some 5 are very expensive, 6 others don't cost anything at all.

    That's 7 a hobby means. It is 8 we like to do in our free time just 9 the fun of it. It gives us 10. So find a hobby for yourself.