Simple tenses

1. He … his device a week ago.

a) improved

b) improve

c) improves

d) will improve

2. Newton … the law of gravity in 1666.

a) establish

b) established

c) establishes

d) will establish

3. He … his report at the library yesterday.

a) prepare

b) prepares

c) prepared

d) will prepare

4. He … his article a month ago.

a) publish

b) publishes

c) will publish

d) published

5. The explorers usually … a study of the North Pole in summer.

a) conduct

b) conducted

c) conducts

d) will conduct

6. Scientists … to study plasma in 1920.

a) begin

b) began

c) begins

d) will begin

7. In earlier days people … the places used for chemical work a workshop.

a) call

b) calls

c) called

d) will call

8. Many power stations … atomic energy.

a) shall use

b) will use

c) uses

d) use

9. Our plant … atomic energy for running machines as a rule.

a) uses

b) use

c) used

d) will use

10. Scientists and engineers … rocket technology in close cooperation.

a) will develop

b) develop

c) develops

d) shall develop

11. We widely … electronic devices in industry.

a) uses

b) will use

c) use

d) shall use

12. Our astronomers … the moon regularly.

a) observes

b) will observe

c) observed

d) observe

13. At present my friend … these experiments to compare the weights of elements.

a) makes

b) made

c) make

d) will make

14. Scientists usually … new elements in nuclear reactors.

a) produces

b) produce

c) produces

d) will produce

15. We usually … both types of thermometers in our work.

a) uses

b) used

c) use

d) will use

16. We always … students with all the necessary instruments for work in the laboratory.

a) will provide

b) provided

c) provides

d) provide

17. The automatic space station always … important information on space.

a) provides

b) provide

c) provided

d) will provide

18. The scientists … the theory of atomic structure of the main minerals in the previous century.

a) develop

b) developed

c) develops

d) will develop

19. This technology … us to improve the quality of the research.

a) enable

b) enabling

c) enables

d) to enable

20. This material always … soft when heated.

a) become

b) became

c) will become

d) becomes

21. Computer usually … the results on the screen.

a) display

b) displays

c) displayed

d) will display

22. Scientific and technical progress … man to obtain newer and cheaper sources of energy.

a) enables

b) enable

c) enabling

d) to enable

23. Automatic control … in many fields of engineering.

a) appear

b) appearing

c) appears

d) to appear

24. Automatic control always … many control instruments and apparatus.

a) will involve

b) involved

c) involve

d) involves

25. Primitive automatic machines … in early civilizations.

a) appeared

b) appear

c) appears

d) will appear

26. In the XXI century great changes … in the design of autos.

a) come

b) will come

c) comes

d) came

27. The cars of the future … better engines.

a) has

b) have

c) will have

d) had

28. In future cars … safely with the help of computers.

a) ran

b) runs

c) run

d) will run

29. Computers … driving speed of the cars in future.

a) will regulate

b) regulate

c) regulates

d) regulated

30. The engines … on the fuel of future.

a) will operate

b) operate

c) operates

d) operated

31. Nuclear power plants … unlimited amounts of electric energy at very low costs.

a) produces

b) produce

c) producing

d) to produce

32. Very soon people … electric cars or gas turbine engine cars.

a) drive

b) drives

c) will drive

d) drove

33. He … his device next time.

a) improve

b) improves

c) improved

d) will improve

34. He always … his reports in the library.

a) prepares

b) prepare

c) prepared

d) will prepare

35. He … articles twice a year.

a) publish

b) publishes

c) publishing

d) to publish

36. The explorers … their study of the North Pole next year.

a) continues

b) continue

c) will continue

d) continued

37. People … the place, where they make experiments, a laboratory.

a) will call

b) calls

c) called

d) call

38. Our plant … atomic energy for running the machines before.

a) used

b) use

c) uses

d) will use

39. We widely … electronic devices in our last research.

a) use

b) used

c) uses

d) will use

40. My friend … his last experiments to compare the weights of elements.

a) make

b) makes

c) made

d) will make

41. When we heated the material, it … soft.

a) will become

b) becomes

c) become

d) became

42. Last time we … our students with all the necessary instruments for the experiment.

a) provided

b) provide

c) provides

d) will provide

43. Cars usually … on petrol.

a) will run

b) run

c) runs

d) ran

44. They … their method of work for the next experiment.

a) improve

b) improves

c) will improve

d) improved

45. Electronic devices … the flow of electrons as a rule.

a) controls

b) controlled

c) will control

d) control

46. They … research on special constructions of semiconductors last year.

a) conducted

b) conduct

c) conducts

d) will conduct

47. People … electronic equipment at the beginning of the century.

a) will use

b) used

c) use

d) uses

48. Many students sometimes … complicated programmes as a hobby.

a) created

b) will create

c) create

d) creates

49. They … making the experiment last May.

a) will begin

b) begin

c) begins

d) began

50. These special devices … a long history.

a) has

b) have

c) having

d) to have

Дата добавления: 2015-11-16