Ex. 17. Use the verbs in the required form. Read and translate the sentences

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 (увольняться) 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.