Ex. 6 Open the brackets using the correct tense

1. Why some people (like) shopping online? 2. How we (call) the most powerful mainframes? 3. Since 1997 there (be) a high-tech revolution in China. 4. The real power of a computer (lie) in the speed with which it (check) these switches anywhere. 5. Supercomputers (revolutionize) the design of aircraft and automobiles. 6. This key (not / have) a fixed function. 7. Occasionally a computer (freeze). 8. Someone (access) his files yesterday as he (choose) a simple password. 9. Hackers (steal) confidential information from the database last week. 10. Commonly she (use) C++ and JavaScript. 11. They already (buy) a computer? 12. At the moment we (develop) a Web – based project. 13. She (need) a computer for writing letters. 14. This key (not / move) the cursor down. It (move) the cursor up. 15. How long he (be) in charge of the IT department? 16. I think computers (replace) bus drivers in future. 17. This (not / mean) that the field of computers is clear of evil. 18. In 1969 there (be) a network of just four mainframe computers. By 1972 the number (rise) to forty. 19. How long you (test) this program? 20. My friend just (adjust) his monitor.

Ex. 7 Open the brackets using the correct tense

1. He (design) websites for local companies? 2. He never (smoke) when he (use) his CD-ROM drive. 3. What problem you (have) with graphics yesterday? 4. When you (to join) the IBM? 5. There (be) many problems with hardware in the early days. 6. This type of scanners (come) into widespread office use in 1980. 7. What ROM (stand) for? 8. I think that biological computers (replace) electronic computers in the future. 9. Today computers (become) smaller and smaller. 10. How long you (set up) websites for a local travel agency? 11. I (be) with the company for three years. 12. At the moment she (work) on a program for universities. 13. This company (produce) scanners for ten years. 14. I’m afraid, I (not / see) this file yet. 15. Around 150 new computer viruses (appear) every month.

Topic 2. Tenses of an English verb (Passive voice)

Ex. 8 Rewrite the sentences using Passive Voice

1. He built IBM’s success on the principal of customer satisfaction. 2. One can divide computers into three broad categories. 3. We use the term workstation to describe a very powerful desktop computer. 4. The screen displays the correct word. 5. Does the computer program control the output of the keys? 6. Alex bought a laser printer last week. 7. She needs a computer to keep staff records. 8. Translator has transformed the program into machine code. 9. Which language did they use to write Windows OS? 10. They sell the latest models of scanners and printers in this shop. 11. Do they use Java for writing programs for the WWW? 12. Can we find magnetic ink characters on bank cheques?

Ex. 9 Rewrite the sentences using Passive Voice

1. We use a lot of computer types in all spheres of our life. 2. They designed a specialized program ACD See to work with pictures. 3. She will use computer graphics in her advertisement. 4. Do banks use computers to look after their customers' money? 5. When did they buy that computer? 6. We’ve sent Anna on a CAD course. 7. They used a PC for playing computer games. 8. They will calculate the bill for the customer. 9. We can use computers to process information in very different ways. 10. They have used databases and word processors to keep records of students, teachers and materials. 11. They are constantly improving the printers. 12. My friend has adjusted his monitor. 13. Who is repairing John’s computer? 14. Do they use a browser program for looking at pages on the Internet? 15. We know computer equipment as hardware. 16. They have customized their computers according to their needs. 17. You must save a file before you turn the computer off. 18. They launched this chip last week.19. He will adopt a better Internet technology. 20. We have used a printer to print this document.