Use the verbs in the required tense form in the active voice. 1. every year, computer engineers [to make – present indefinite] chips that can hold more bytes. 2. a warning message [to flash up– past indefinite] on my computer screen. 3. prospector [to be – present indefinite] a computer expert system that [to help– present indefinite] geologists in their search for new mineral deposits. 4. the discovery of semiconductor materials [to play – past indefinite] a very important role in the development of electronics. 5. cd-rom usually [to contain – present indefinite] up to 680 megabytes of computer programs and data. 6. installation of the security system [to take – future indefinite] several days. 7. the new computer virus quickly [to spread– past indefinite] worldwide. 8. this shop [to sell– present indefinite] printers and scanners, and all-in-ones that [to combine – present indefinite] two devices. 9. i [to find– past indefinite] this information on the internet. 10. the password [to give – future indefinite] you access to all files on the hard disk.
2. A warning message flashed up on my computer screen.
3. PROSPECTOR is a computer expert system that helps geologists in their search for new mineral deposits.
4. The discovery of semiconductor materials played a very important role in the development of electronics.
5. CD-ROM usually contains up to 680 megabytes of computer programs and data.
6. Installation of the security system will take several days.
7. The new computer virus quickly spread worldwide.
8. This shop sells printers and scanners, and all-in-ones that combine two devices.
9. I found this information on the Internet.
10. The password will give you access to all files on the hard disk.