Ann is the most beautiful girl I know.
Jim is taller than Tom.
This is the strongest coffee I have ever tried!
Stella is the most beautiful girl in our class.
It is the oldest church in my city.
She is one of the best tennis players in the world.
These suitcases are heavy, but this one is the heaviest of all.
Everest is the highest mountain.
Russia is the biggest country in the world.
Gold is the more expensive than silver.
Paul is five years younger than Nick.
He is the youngest child in our family.
People in the countryside are more friendly than they are in the city.
Andrew is the tallest boy in our class.
Maria has three peaches
Объяснение:
Здесь мы употребили множественное число, т.к. персиков много(три штуки). Второй вариант нам подходит в предложении "Maria has a peach"