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Nina is my best friend.

Monkeys are the funniest animals in the world.

I am the tallest in my class.

My shirt is dirtier than your shirt.

His dog is bigger than my dog.

Your book is more interesting than her book.

Our teacher is better than your teacher.

Her brother is younger than I.

His pencil is longer than my pencil.

My house is larger than your house.

My cat is fatter than your cat.