Birds are last the last living dinosaur dinosaurs.
Some of birds Some birds lost their teeth.
An asteroid hit earth Earth.
Only birds live in world live in the world.
Score: B+
Tips) "the last"처럼 마지막 하나를 말할 때는 the를 써요.
Tips) Earth는 행성 이름이라 대문자로 써요.
Tips) "in the world"를 함께 써요.
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