1. Voice mail [to enable – Present Indefinite Active] telephone callers to leave messages when the person, whom they [to call –Present Continuous Active], [not / to answer – Present Indefinite Active] the telephone.
2. The disk [to infect – Past Indefinite Passive] with a virus called "Stoned III".
3. The first computers [to use – Past Continuous Passive] by nonscientists only as adding machines.
4. Computer pirates [to cost– Present Indefinite Active] the computer game industry twenty million pounds a year.
5. The information [to process – Present Continuous Passive] by the computer now.
6. This computer program [to assess– Future Indefinite Active] how much [to spend– Present Indefinite Passive] on each student within the University.
7. Four years ago, he [to found– Past Indefinite Active] a computer software firm, which [to develop– Past Continuous Active] software for the Internet.
8. Could you be more specific about what you [to look – Present Continuous Active] for?
9. These games [to download– Past Indefinite Passive] free from the Internet.
10. The main reason our programmer quit (óâîëüíÿòüñÿ) is that she [not / to pay– Past Continuous Passive] enough.
11. If the user [not / to move– Present Continuous Active] the mouse, the cursor [to remain– Present Indefinite Active] in the same point.
12. Smart cards [to become – Present Continuous Active] common as security devices for accessing computer networks and corporate buildings.