Выберите грамматически верный вариант ответа. 1. The decrease in cost of microelectronic devices …. about changes in the way people and computers interact since the beginning of the century. a) brought b) have brought c) has brought
2. My friend …. a new PC recently and he is very happy now, because it gives him a lot of opportunities for work. a) buy b) bought c) has bought
3. I’m not going to surf the Internet today. I …. all necessary information some time ago. a) find b) found c) have found
4. Our group mates …. English on-line this week yet. a) haven’t practised b) didn’t practise c) hasn’t practised
5. …. you brother ever … Photoshop? a) does use b) has used c) is used
6. When …. Alex … icons and music from the Internet last time? a) does download b) did download c) has downloaded
7. I haven’t seen my cousin …. 2005. a) since b) from c) for
8. I …. computer literate by the age of 18. a) became b) have become c) had become
9. When we came home, my father already … on-line banking. a) did b) was doing c) had done
10. The children …. games on-line yet, when their mother came home. a) haven’t played b) hasn’t played c) hadn’t played 11. …. you every opportunity to master English by the time you left the University? a) did use b) had used c) have used
12. Perhaps my brother …. computer business by the time he is 35. a) will have started b) will have start c) will start
13. Mary’s parents …. a new laptop to her when she passes all her exams with excellent marks. a) present b) presented c) will have presented
14. Probably everyone …. computers that fit into your hand by 2020. a) will have b) will be having c) will have had
15. I hope books and newspaper … by the 22nd century. a) haven’t disappeared b) won’t have disappeared c) hadn’t disappeared
16. By what time … you that website? a) will make b) will have make c) will have made
17. Modern PCs do amazing things: they …. even understand spoken language! a) can b) could c) may
18. Nowadays computers …. follow instructions and play mathematical games. a) could b) can c) will be able to 19. A lot of musicians and music companies were not happy, because people …. get their music free in the Internet. a) can b) will be able to c) could 20. Nowadays everybody …. be computer literate. a) must b) had to c) to be to
21. …. he …. make a report about new computer- based technologies yesterday? a) does, have to b) did, have to c) is, have to
22. I think you … change your old PC for a new model of a laptop – it’s more convenient to use. a) must b) should c) can
23. When your parents ask you where you were last night, you … tell them lies. a) shouldn’t b) mustn’t c) оба варианта возможны
24. Before I entered the University, I … surf the Internet and find necessary information. a) couldn’t b) can’t c) won’t be able to
25. …. I borrow your floppy disk? – Of course, I have some at home. a) must b) may c) should
26. The train ….. to arrive at 5 o’clock. a) be b) is c) are
27. I have only …. computer at home. a) one b) two c) three
28. I don’t like political programmes, but I like musical …. a) one b) ones c) оба варианты возможны
29. Internet is the greatest source of information and the most popular… . a) one b) ones c) оба варианта возможны 30. My mother is the best friend for me and a very fair … . a) one b) ones c) оба варианта возможны
2. The correct answer is "has bought". The action of buying a new PC is recent and has an effect on the present, so we use the present perfect tense.
3. The correct answer is "found". The action of finding all necessary information happened in the past and has no effect on the present, so we use the past tense.
4. The correct answer is "haven't practiced". The action of practicing English on-line is a continuous action that started in the past and continues to the present, so we use the present perfect tense with negative form.
5. The correct answer is "has your brother ever used". We use the present perfect tense to talk about an action that happened at an unspecified time in the past and could still have an effect on the present.
6. The correct answer is "did Alex download". The action of downloading icons and music from the Internet happened in the past and is completed, so we use the past tense.
7. The correct answer is "since". We use "since" to talk about a point in time in the past and continues until the present.
8. The correct answer is "became". The action of becoming computer literate happened in the past and is completed, so we use the past tense.
9. The correct answer is "had done". The action of doing on-line banking happened before another past action (coming home), so we use past perfect tense.
10. The correct answer is "hadn't played". The action of playing games on-line happened before another past action (their mother coming home), so we use past perfect tense with negative form.
11. The correct answer is "had you used". We use past perfect tense to talk about an action that happened before another past action.
12. The correct answer is "will have started". We use future perfect tense to talk about an action that will be completed before a certain point in the future.
13. The correct answer is "will have presented". We use future perfect tense to talk about an action that will be completed before a certain point in the future.
14. The correct answer is "will have". We use future perfect tense to talk about an action that will be completed before a certain point in the future.
15. The correct answer is "won't have disappeared". We use future perfect tense to talk about an action that will not be completed before a certain point in the future.
16. The correct answer is "will have made". We use future perfect tense to talk about an action that will be completed before a certain point in the future.
17. The correct answer is "can". We use "can" to talk about abilities and possibilities in the present.
18. The correct answer is "can". We use "can" to talk about abilities and possibilities in the present.
19. The correct answer is "could". We use "could" to talk about abilities and possibilities in the past.
20. The correct answer is "must". We use "must" to talk about obligations in the present.
21. The correct answer is "did, have to". We use past simple tense with "did" to form questions and "have to" to talk about obligations in the present.
22. The correct answer is "should". We use "should" to give advice or suggestions.
23. The correct answer is "shouldn't". We use "shouldn't" to talk about something that is not advisable or allowed.
24. The correct answer is "couldn't". We use "couldn't" to talk about inability in the past.
25. The correct answer is "may". We use "may" to ask for permission.
26. The correct answer is "is". We use "is" for singular subjects in the present tense.
27. The correct answer is "one". We use "one" for countable nouns in the singular form.
28. The correct answer is "ones". We use "ones" for countable nouns in the plural form.
29. The correct answer is "ones". We use "ones" for countable nouns in the plural form.
30. The correct answer is "one". We use "one" when we refer to a single thing or person in a group.