The rapid growth of the Internet over recent years has brought great changes to our life. It has 1 very important in our daily life. More and more people are 2 the Internet every day. We can learn the news 3 at home and abroad. We can get a lot of useful information 4 the Internet. We can also send messages by email, go to net schools, read the different kinds of books and learn foreign languages by 5 . What's more, when we get 6 from work or study, we can relax ourselves 7 listening to the music, watching the movies, 8 a chat with friends, playing the computer games and going shopping online. In a word, the Internet has 9 our life more colorful. We should learn to use the Internet properly 10 it will become really helpful to us.
选项：

A:in
B:so
C:so