Task 1. 1. Nowadays people have got many environmental problems.

     2. The Grand Canyon attracts a lot of tourists every year.

     3. Aunt Polly has canned a lot of fruits and vegetables since August.

     4. Kate was born in Sydney in 1997.

     5. I have never seen castles in Australia.

Task 2. 1. Laura often comes home late

2. Sometimes he feels sad and unhappy

3. Isn’t still raining?

4. Are they all so independent?

5. We have never seen dodoes.

Task 3. 

1-b, 

2-a, 

3-b, 

4-b, 

5-b, 

6-a

Task 4. 1. Nobody can influence on his final decision.

     2. Could you look after my flowers? I’m going to Moscow on weekends.

     3. I’d like you to spend this summer with me.

     4. Pr. Gordon said water pollution was getting worse.

     5. Tom would like to become an explorer of new lands.