Most people, who have access to the internet, use the Internet to send and receive messages.8 In many developing countries, businessmen can use the Internet instead of expensive and unreliable telecom systems. One of the most important Internet issues is security. 9 E-mail is the most popular and simplest application of the global computer network, covering over 100 countries and tens of millions of users. 10 Computer-aided design with a computer is most widely used in electronics, electrical engineering, mechanics, mechanical engineering, architecture.
2) I was glad that he had returned.
3) Yesterday when I looked out of my window I saw that my children were running in the garden.
4) When she came home,her son was taking supper.
5) His mother is a house wife.
6) Tomorrow I wouldn`t go to school.
7) Look! Kate is helping her mother about the house.
8) Usually he comes home at 7 o'clock ,but yesterday he came at 6.
9) Peter will be ready in 10 minutes.He is taking a bath at the moment.
10) I don`t know what time is now.My watch has stopped.
11) He`ll have written) a letter by 7 o'clock tomorrow.
12) Tomorrow at that time we`ll be flying in Moscow.
13) When the old man had shouted,the strangers jumped of the fence.
14) Victoria is always busy.She is busy now too.She is looking trough the newspapers.
15) Look! Somebody has broken my window.