РЕШИТЬ ПО АНГЛИЙСКОМУ ЯЗЫКУ)))
Упражнение 14. Rewrite the sentences using modal verbs

1. — Some people just don’t know how to sing. (be able to) 2. — There’s a chance that she’s in the airport. (could) 3. — I knew how to ride a horse when I was six. (could) 4. — John isn’t sure if he is going to Turkey. (might not) 5. — Do not block the emergency exit. (mustn’t)

If everybody starts caring about the planet we live on, many environmental problems can be solved. For example, if we start recycling paper and cardboard, we can save lots of trees. If we start using public transport more than private cars, we can have less air pollution. Local governments can also help to prevent some problems, if they forbid logging companies to destroy the forests, or stop factories from polluting water. The most important thing is, of course, to start acting immediately, otherwise we might have to face many global disasters.

1
 — Where are the children?
 — They are in the yard.
 — What they are doing?
 — They are feeding the birds.

2

 — Where is our Head Teacher?
 — He is in his study.
 — What he is doing?
 — He is making a schedule.

3

 — Where are the girls and boys?
 — They are in the cinema.
 — What they are doing?
 — They are watching a film.

4

 — Where are our friends?
 — They are at school.
 — What they are doing?
 — They are learning.

5
 — Where is the puppy?
 — The puppy is in the hall.
 — What it is doing?
 — It is playing with a ball.