Грамматика. Выбрать правильный ответ

1.The main aim of our students is [A — speaks /B — speaking/ C – spoke] English perfectly.

2.I know of his [A — to sent /B — to be sent / C – being sent ] to most fires in this town.

3.Water is one of the most common [A — extinguishing / В — extinguisher / С - extinguished] medium.

4.Carbon dioxide as an [A — extinguishes /B — to extinguish / C – extinguishing] agent is widely employed in fixed installations.

5.A turntable ladder is an escape [A — fixed /B- to fixed /C – fixes] to a turntable, by means of which it can be rotated .

6.Не likes [A — read/B — reading /C – ready] books.

7.Firemen are [A — keeping /B — had been keeping /C – to keep] fit their equipment to be ready to respond to a fire as quick as possible.

8.Hazardous materials [A — involving / B — to involved /C – involved] in a fire were in the building.

9.The [A — have blanketing / B — blanketing / C – had blanketing] of oxygen exclusion is most effective.

10.The introduction of inert gases, foam equipment, vapourizing liquids and dry powders is expected [A — widen /B — to widen /C –wide] the scope of attack.

11.Fire fighters [A — extinguishing /B — extinguish/C – extinguished] deep-seated fires should be especially careful.

12.The fireman displayed great skill in [A — being extinguishing /B — extinguishing/C – extinguish] the fire.

13.He couldn’t move the leg [A — have injured /B — injured /C – injuring] in a fire.

14.A child [A/ was warned /B — warned /C – have warned ] about the danger of playing with a fire.

15.Efforts directed at [A — being depriving / B — depriving / C – to depriving] the fire of oxygen are called smothering.
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