Помогите пожалуйста сделать 2-е и 5-е упражнение!) Заранее спасибо)

1)My room is colder than the kitchen 2)My garden is nicer than school garden 3)Your hair is darker than your brother's hair 4)John is more clever than James5)Paris is older than New York 6)Helen is more cheerful than Jane7)Life in big cities is more expensive than life in small towns 5 не знаю,извини