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3.3. Test 4

Choose the correct answer:

1. The rain …just … .

a – is beginning,

b – were beginning,

c – begins.

2. It… … . Do not go out.

a – snows,

b – is snowing,

c – will be snowing.

3. He… not … football this season.

a – is playing,

b – were playing,

c – will be playing.

4. The secretary … a letter now.

a – are typing,

b – were typing,

c – is typing.

5. You … … a lot of noise.

a – is making,

b – were making,

c – are making.

6. I … … to get some sleep.

a – try,

b – am trying,

c – will try.

7. They … … the flat all morning.

a – was cleaning,

b – is cleaning,

c – were cleaning.

8. She … … on her report all Saturday.

a – were working,

b – is working,

c – was working.

9. The wind … … all day.

a – will be blowing,

b – was blowing,

c – am blowing.

10. They … … …. dinner tomorrow at six.

a – was having,

b – will be having,

c – will have.

11. Usually we … our examinations in June.

a – is passing,

b – pass,

c – will pass.

12. She … us from time to time.

a – visits,

b – is visiting,

c – was visiting.

13. Look! The bus … … .

a – will come,

b – is coming,

c – came.

14. My brother … … over the telephone when I came in.

a – spoke,

b – will speak,

c – was speaking.

15. My friend … … TV when I came.

a – watched,

b – watches,

c – was watching.

16. …… of water facilities may be needed for growing fish.

a – two kinds,

b – several kinds,

c – many kinds.

17. These facilities are grouped into … types.

а – 5,

b – 7,

с – 4.

18. A concrete raceway is constructed, when there is … .

a – abundant supply of clean water,

b – few water,

c – abundant supply of warm water

19. The … … … … creates a favorable place to raise fish.

а – tide,

b – constant flow of water,

c – a receiving stream

20. The whole week before examinations my friend ...... tests.

a – passed,

b – was passing,

c – will pass.

21. … … … require a receiving stream that has adequate flow.

a – pond systems,

b – flow-through systems,

c – cage systems.

22. … require more land area.

a – pond systems,

b – cage systems,

c – recirculating systems.

23. Higher densities of fish may require … aeration.

a – chemical,

b – mechanical,

c – physical

24. The advantage of … … is that a high densities of fish can be kept at optimum temperatures.

a – pond systems,

b – recirculating systems,

c – cage systems.

25. … … uses existing water resources.

a – cage system,

b – pond system,

c – recirculating system

26. … … is an alternative to pond system.

a – recirculating system,

b – raceways.

c – cage culture

Unit 5

1. Systems of Aquaculture

2. Production Phases

3. Perfect Tenses

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