1. The system crash was caused ___ disk boot failure [сбой самозагрузки с жёсткого диска].
A. on C. by
B. of D. to
2. Xerox Corporation is a producer ___ photocopiers and other electronic office devices.
A. of C. with
B. to D. by
3. In the past, messages from Europe to America ___ by ship.
A. are sent C. sent
B. were sent D. will be sent
4. I accidentally ___ your email.
A. deleted C. deletes
B. am deleted D. was deleted
5. I think either the microphone or the recording mechanism ___.
A. were broken C. is broken
B. breaks D. will break
6. I work at a factory that ___ microchips.
A. is produced C. produces
B. produce D. will be produced
7. I answered the phone but there ___ no one at the other end.
A. is C. were
B. will be D. was
8. ___ memory units on magnetic disks store a large volume of data?
A. Are C. Does
B. Were D. Do
9. Why ___ they denied access to the information?
A. did C. will
B. were D. is
10. What channel ___ this TV programme run?
A. does C. was
B. is D. do
11. You ___ the Internet for an unlimited number of hours.
A. must access C. can be accessed
B. may access D. should access
12. Program instructions ___ according to a set of rules.
A. must be written C. can be written
B. should write D. must write