Подчеркните в предложении придаточные предложения условия.
1. if runoff could be perfectly controlled throughout the river drainage basins, there would have been no flood problem.
2. had they met with such difficulties before, would have known what to do now.
3. if there had been oxygen in the atmosphere when life began, the sun's rays would not have prevented life from developing on land.

1. The actors in a play, film or television show

b) Cast

2. The group of people who operate a ship or an airplane

d) Crew

3. The people who attend a performance

a) Audience

4. A group of people who work for an organisation or business

b) Staff

5. A group of theatrical performers

a) Troupe

6. A group of instrumentalists playing music

d) Band

7. a group of students who meet to be taught a subject

a) Class

8. a group of soldiers

d) Troop

9. A group of people who are to make rules and laws

b) Council

10. a group of criminals

d) Gang

West Asian and African elephants live in the jungle. Some of the animals work for people because they can lift and carry heavy objects. All elephants have endurance for walking long distances, but not for running. In eastern and southern Africa is often their usual pastures dry up for months. Elephants have long way to go before they find grass and water. Hungry elephants can walk more than 30 kilometers in one day. They never forget the place where there is water. They can drink about 200 liters of water every day and eat 100 kilograms of food