6.
1) Есть
2) If I became a president of my country, I'd build more schools and hospitals.
3) If i met an alien, I'd say hello.
4) If i won a trip to anywhere in the world, i'd go to England
5) If i lived in the North Pole, I'd see Polar Lights very often.

7.
2) If i won 10.000, i'd buy my own zoo
3) if i lived in England, i'd speak English very well
4) If i had an aeroplane, i would (i'd) fly over the top of Mount Everest
5) if i met Cristiano Ronaldo, I'd say "you're great football player"