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2The dog has got longer ears than the cat.The cat's ears aren't as long as the dog's.The rabbit has the longest years of all.

3The green hat is cheaper than the red hat, The yellow hat is as expensive as the green hat but the red hat is the most expensive of all.

4A bird is bigger  than a butterfly but smaller than a goat. A butterfly isn't as big as the bird.A butterfly is the smallest of all.