Twenty years ago, few people had mobile phones. But now, most people have 【小题1】 own mobile phones. With a mobile phone people can make phone calls 【小题2】. Our life has changed a lot because of it. Chatting and message exchanging help people get to know each other 【小题3】. You can even take 【小题4】 and send them to friends far away.

【小题5】 amazing! And now we can do more and more things 【小题6】 it, such as playing games, getting and sending e-mails, surfing the Internet, or even 【小题7】 for what we buy. But there are some disadvantages. You have to pay the bill and it’s bad for your body if you keep 【小题8】 it for a long time. And for students, if they 【小题9】 too much time playing with it, they may not be able to study well.

In a word, mobile phones play an important role in our daily life. It’s helpful and necessary. 【小题10】 people, especially students, should use them properly.

Not only adults but also teenagers have problems with their life. Here is a survey showing the main problems of teenagers.

They 【小题1】 because they have too much homework to do both at school and at home. They have 【小题2】 to take. And parents usually send them to different classes at weekends. 【小题3】, so many of them almost become bookworms (书虫). On holidays, they could 【小题4】 have their own time to do what they are interested in. Now more and more teenagers 【小题5】 shortsighted (近视的).

They often read in bed or keep reading for a long time 【小题6】 having a rest. Some of them are crazy about 【小题7】. Some spend much time watching TV. Another serious problem among teenagers is that many of them are becoming fat. They eat too much junk food, and they take 【小题8】 exercise.

I think teenagers should think of ways on 【小题9】 to solve the problems. They should make a plan for study and hobbies and find time to relax 【小题10】.