—It ______ what you want to use it for.
Many people like to use computers now. They are (help) in many ways. Firstly, they are very fast. They can work with information more (quick) than a person. Secondly, computers can work with quite a lot of information at same time. Thirdly, they can keep information for a long time. Also, computers are almost correct. They are not perfect, of course, but usually they do not make mistakes.
It is important to know about computers. Computers have both advantages(优点) and disadvantages. We can (search) the Internet for information, listen to music, write a blog. We can also chat with (we) friends, play computer games and so on. But some students have (problem). They spend too much time computers. This is not good for their eyes. And it is bad for their studies as (good). Even (bad), some students may visit bad websites. it is necessary for us to use computers correctly.