Read the theory, then complete the correct form of the words in brackets​

1) in summer they travel very much in the caucasus. или they travel very much in the caucasus in summer. 2) she teaches us english with pleasure. 3) first of all, i must tell you many things about myself. 4) he is the last person i want to see now. 5) every morning i have to wait ages for a bus at the bus stop. 6) there are lively discussions at his seminars.

1. at, in

2. from, to, on

3. to, about

4. from, under

5.by, on, to 

in some sports meets: too, as the judge.

"the judge" 

1.a garbage is not only ugly, bute dangerous because it causes an air pollution.

2. cars are an important part of a life for most people. but cars also cause a pollution and release fume.

3. in canada people don't realise that they throw out 10,000 tons of a waste.

4. over 14 billion pounds of a waste per year is throw out to sea and it kills millions of sea animals.

5. if we want to breathe  a healthy air we have to think about what we do.

6. because of our lack of a knowledge there is now a huge hole over an antractic.

7.a water is a vital element of a life.