Задание:
Fill the gaps using the words. The internet, or the Net, is considered to be one of the most important inventions of the 20th century. It is a cheap and available source of information - and not only that. You can also send documents all over the world, listen to new music, read books, exchange letters with your friends, sell and buy things, play games, read the latest news and do a lot of other things. The computers are joined through high-speed connections. The most popular internet service is e-mail. Another problem is security. However, some problems remain. The internet addiction (зависимость).