根据短文内容和所给中文提示，在空白处写出单词的正确形式，每空限填空一词。
John Allen, an American scientist once said, “ the Internet is the world's largest library, but all the (书 ) in it are on the floor!” What he meant is that the Internet is full of (信息) . But it can be difficult to find what you really need . The Internet has (另一个) disadvantage anyone can （创建）a website,so you can find websites about what ever you can imagine. Unfortunately, a lot of what is written on them is not always true.
At the same time, the Internet provides many other things .On some websites, you can download music and films . They are usually very _ (便宜) and some are even free. On some other websites, you can connect with people from all over the world . And there are some great online （商店），too. For example，one Bay people (卖）,used clothes, CDs, and even cars at very low prices .
It is true that the Internet has changed the way we work and (交流). But we should not depend on it too much . Some people are also afraid that (网上冲浪）the Internet has taken the place of other healthier activities, especially for (年轻的) people . Whether you love it or hate it, though, you'd better get used to it because it is right here to stay .