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IV. Use the Past Simple or the Present Perfect instead of the infinitives in brackets:

1. - How long have you known him?

- I (to know) him since 1965.

2. He (to live) in Orsk for five years and then (to go) to Siberia.

3. - When did he arrive?

- He (to arrive) at 2 o’clock.

4. I (to read) this book when I was at school.

5. He (to enter) the institute last year.

6. She (to meet) him in Sovetskaya Street this afternoon.

7. I am angry with Ann, she (to keep) me waiting at the institute for a long time this

evening.

8. - Lend me your rubber. I (to make) a mistake and wish to rub it out.

- I’m sorry, I can’t. I (to leave) it in the lecture-hall.

9. - Have you found the key which you lost yesterday?

- Yes, I (to find) it in the pocket of my other coat.

10. I (to see) him in the laboratory today. We (to be) their together.

11. My sister (to make) good progress in English.

12. He just (to make) up his mind to enter this institute.

13. She (to make) mistakes in her pronunciation when she was a first-year student.

14. Our students (to take) part in the scientific conference last month.

15. This institute (to train) highly-qualified engineers for many years.

V. Use the required tense (Present and Past Simple, Present and Past Continuous, Present Perfect and Present Perfect Continuous):

1. She (to go) to London five years ago. Since then she (not to speak) English and (to

forget) nearly all she (to learn) there.

2. When he (to run) after the tram, he (to fall) and (to hurt) his leg.

3. She teacher just (to leave). You are late.

4. He (to give) a lecture when I (to enter) the lecture-hall.

5. - What are you looking for?

- I (to loose) my pen and (to want) to find it.

6. My friend Ann (to learn) English for the last three years and now she (to study)

German too.

7. - Did you speak to Ann yesterday?

- No, I (not to see) her for a long time.

8. My brother (to study) modern English literature for two years and then (to give) it

up.

9. - I (to look) at this photo for five minutes, but I can’t see you in it.

- I’m afraid you (to look) at the wrong one.

10. You must stop reading; you have a headache because you (to read) too much.

11. My elder brother (to join) the army when he was 18.

12. They (to live) in Novotroitsk for 10 years and then (to move) to the country.

13. We just (to make) our minds to live Moscow for Kiev.

14. He (to write) his thesis for the last two years, but he (not to finish) it yet.

15. Our students (to have) favourable conditions for study.

VI. Use the required tense:

  1. Ann (to work) very hard last term.

  2. The research workers (to examine) the new sample for three months.

  3. My sister (to clean) the room before I came.

  4. Our teacher (to live) near the institute.

  5. At 7 o’clock yesterday morning she (to give) lectures.

  6. They (to learn) many English words by the end of this academic year.

  7. The professor (to correct) our tests now.

  8. Ann’s father (to work) at the plant for 15 years.

  9. They (to take) an exam now.

  10. His fellow-student (to pass) just the most difficult exam.

  11. Anosov (to work) for 5 years to rediscover the secret of the real bulat steel.

  12. The first-year students (to graduate) from the institute in 5years.

  13. Our examination board (to consist) of 3 examiners.

  14. Our Institute (to occupy) two buildings.

  15. She (to make) a report at that time last Monday.

  16. The examiners (to correct) students’ tests by the end of the next week.

  17. I (to have) my winter vacations now.

  18. The academic year just (to begin).

  19. He (to do) academic and research work for ten years.

  20. Yesterday we (to come) to the station and our train (to leave).