Грамматика. Выберите правильный ответ

1 The conference discussed some new methods [A — to be used / В — to use / С — use] in modern locomotive-building.

2. This plant is known [A — producing/B — to produce /C – produced] diesel locomotives.

3. I find your research work [A — to be /B — was /C – were] very interesting,
4. It’s entirely possible [A — designed /B — to design /C – has designed] a fuel filter element capable of retaining all particles large enough to cause damage to the equipment.
5. The experiments were reported [A — have been /B — had been/ C – to be] successful.

6. They were happy [A — to be took/B — to take /C – to taken] part in our experience.

7. The locomotive engine [A — to be used /B — to use /C – have used] in this test is of new design.
8. I expect you [A — come /B — to come /C – comed] in time.
9. It is possible for us [A — to be finished /B — to have finished /C – to finish]our work in time.
10. This method is not good enough [A — to be used /B — to have used /C – to has been used] everywhere.

11. The new branches of industry [A — to be developed /B — to developed /C – develop] in the country are locmotive-building and metallurgy.

12. The engineer expected the work [A — have done /B — to do /C – to be done] in time.

13. The lecture was said [A — to be /B — is /C – have been] very interesting.

14. He seems [A —know /B — have known /C – to know] a great deal about the history of locomotive-building.

15. The engine [A — to be installed /B — been installed /C – have installed] in this locomotive is very powerful.