Perfect tenses

1. Modern factories … recently … in this area.

a) have been … constructed

b) had been … constructed

c) were … constructing

d) are being … constructed

2. By 1998 he … from the university.

a) have graduated

b) was graduated

c) is graduating

d) had graduated

3. Many revolutionary technologies … by the end of the 21st century.

a) have developed

b) had developed

c) will have developed

d) will be developing

4. By the 19th century natural science … into the competence of professionals and relevant institutions.

a) has come

b) came

c) is coming

d) had come

5. A group of engineers … the construction of a new production line this week.

a) had finished

b) will have finished

c) has finished

d) finishing

6. Some engineering fields … already … by the time the Industrial Revolution started.

a) developed

b) had … developed

c) were … developing

d) are … developing

7. The excursion to the automobile plant promises to be interesting as I … never … real production.

a) had … seen

b) sees

c) was … seeing

d) have … seen

8. I am so excited! I … just … an excellent mark on my test.

a) have … received

b) received

c) am … receiving

d) receive

9. By the time he finishes writing his Ph.D. thesis new types of equipment …

a) have introduced

b) will introduce

c) have been introduced

d) will have been introduced

10. “… you ever … with this type of machines?”

“Unfortunately, I don’t have any previous experience.”

a) had … worked

b) has … worked

c) have … worked

d) works

11. He … a lot on his scientific report lately, he is sure to be graded very well.

a) had worked

b) has worked

c) is working

d) works

12. The production … so far, they are waiting for a number of components to be delivered.

a) didn’t start

b) hadn’t started

c) hasn’t started

d) starts

13. Since the first scientific journal began its publication in 1665, the total number of active periodicals … steadily....

a) had … increased

b) increasing

c) was … increasing

d) has … increased

14. The scientific conference … by this time tomorrow.

a) has finished

b) had finished

c) will finish

d) will have finished

15. World science … the problem of increasing environmental pollution so far.

a) hadn’t solved

b) hasn’t solved

c) didn’t solve

d) solved

16. “You look tired.”

“Recently I … the chief engineer of the plant and now I have a lot of new duties to perform.”

a) have been appointed

b) had been appointed

c) am appointed

d) shall be appointed

17. The students … only half of the laboratory work up to now, they’ll have to continue during the next class.

a) had done

b) have done

c) are doing

d) were doing

18. … you ever … about higher technical education? You were always good at mathematics and physics at school.

a) had … thought

b) were … thinking

c) are … thinking

d) have … thought

19. A number of influential government agencies … recently to support scientific research.

a) have been created

b) had been created

c) are created

d) create

20. I …any scientific articles since I graduated from the university, but I find this one really interesting.

a) hasn’t read

b) read

c) haven’t read

d) don’t read

21. Nanotechnology is a very promising scientific field and it … greatly by the end of the next decade.

a) had developed

b) developed

c) has developed

d) will have developed

22. The means of evaluation of students’ knowledge … effective enough so far.

a) haven’t become

b) wasn’t becoming

c) will not become

d) hadn’t become

23. … you already … your research paper on computerized means of production control?

a) has … completed

b) have … completed

c) will … complete

d) were … completing

24. Some scientific methods … since the Middle Ages.

a) had been employed

b) have been employed

c) employ

d) will be employed

25. I … my diploma paper by next Friday and then we can go hiking.

a) defend

b) was defending

c) have been defending

d) will have defended

26. Since the 17th century many international scientific organizations, such as the International Council for Science, … to promote cooperation between the scientific communities of different nations.

a) have been formed

b) had been formed

c) are formed

d) were forming

27. The deadline for this internship program … yet, you still have a chance to apply.

a) hadn’t passed

b) isn’t passing

c) wasn’t passing

d) hasn’t passed

28. Although mining … human interest throughout the history of civilization, the development of the related sciences did not occur until the 18th century.

a) has been

b) is being

c) is

d) was being

29. The research … already … and it proved to be very successful.

a) is … being completed

b) has … been completed

c) will … be completed

d) was … been completed

30. Since the earliest stages of its development, physics … as the fundamental science.

a) had been regarded

b) will be regarded

c) has been regarded

d) was being regarded

31. The origins of aerospace engineering can be traced back to the 19th century although the work of Sir George Cayley … recently … as being from the last decade of the 18th century.

a) had … been dated

b) has … been dated

c) is … being dated

d) will … be dated

32. The new engine … already …, but unfortunately it still needs revision.

a) has … been tested

b) is … being tested

c) will … be tested

d) had … been tested

33. Lately computer use … essential in designing machines and equipment.

a) will become

b) becomes

c) is becoming

d) has become

34. The students who … already … their examination papers are free to go.

a) had … handed in

b) will … hand in

c) have … handed in

d) were … handing in

35. The automation program … so far due to the lack of time for its preparation.

a) wasn’t being launched

b) launches

c) hasn’t been launched

d) hadn’t launched

36. This week I … my project on the road construction so I can finally relax now.

a) have finished

b) had finished

c) was finishing

d) will finish

37. The new technique … so far because of the great costs of the necessary equipment.

a) has not been employed

b) was not being employed

c) would not be employed

d) had not been employed

38. Up to the present we … three assembly plants in different parts of Europe and we plan to build two more in the next five years.

a) had constructed

b) have constructed

c) construct

d) will construct

39. This technology … any practical application so far, but we find it very promising in terms of hardware production.

a) will not have

b) don’t have

c) hasn’t had

d) wasn’t having

40. All means of production … recently … in South Korea.

a) were being … expanded

b) will be … expanded

c) are being … expanded

d) have been … expanded

41. Although we have been conducting experiments for three months now, the necessary data …yet.

a) will not be collected

b) has not been collected

c) was not collected

d) was not being collected

42. I’d like to know whether the series of experiments I … already … are enough.

a) have … performed

b) was … performing

c) will … perform

d) had … performed

43. The plant … a great amount of details this month.

a) would produce

b) had produced

c) produced

d) has produced

44. The development in all fields of science and technology … by a considerable expansion this year.

a) is being marked

b) had been marked

c) has been marked

d) was being marked

45. Lately great attention … to materials whose properties can be changed and controlled.

a) had been paid

b) was being paid

c) is being paid

d) has been paid

46. This month all the components of the device … into a complicated mechanism.

a) were being developed

b) have been developed

c) are being developed

d) would be developed

47. These plants … many types of new vehicles recently.

a) have produced

b) had produced

c) produce

d) will produce

48. This scientific problem is a very interesting one and it … yet, that’s why I chose to investigate it.

a) hadn’t been solved

b) will not be solved

c) is not being solved

d) hasn’t been solved

49. Who knows what new devices … by the end of this century?

a) are invented

b) were invented

c) will have been invented

d) had been invented

50. Lately this curious phenomenon … closely … by many foreign scientists.

a) had been … studied

b) has been … studied

c) is being … studied

d) will be … studied

Дата добавления: 2015-11-16