Переведите предложения,обусловьте ступень прилагательного1)It is correct2)john is youngest

Переведите предложения,обусловьте ступень прилагательного

1)It is correct
2)john is youngest of the three brothers
3)Is the diameter of Jupiter bigger than that of the earth?
4)it's the happiest day in my life!
5)that room is lighter than yours
6)it doesn't take more than four days to cross the Atlantic,does it?
7)they can hardly park here because it's the narrowest street in the city
8)this room is largest than the one upstairs