Looking back on the past 20th century, we human beings have every reason to take pride in all those great achievements. Although we live in the modern world, we also need to talk with others. As we all know, 1 plays an important part in people's lives. As far as I know there are many kinds of communication. Letters, telephones and 2 are most commonly used among them.
3 letters is very common and popular. People use letters to exchange information,4 and thoughts. It is the 5 means of communication because it costs only a little. The second kind is6 . By calling others, people can 7 each other even if they are far away. Now computers have come into our lives. Communication with computers is 8 and easy. You can get to others quickly. In addition, people can 9 emails to each other on the Internet.
In a word, letters, telephones and computers all help to bring people all over the world10. The make our lives more convenient than before.
