Correct: I am, you are, Fred 's, Mary is, She 's, we aren't, they 're, Bob is, it is, Mum and dad are, the cat is, the dog is, Lucy 's, Mum is, Dad isn't, the dogs are, the cats are, I'm not, Incorrect: I have, Fred isen't, they have, she has, we do, we have, I do, he doesn't, they don't, she does, the dog are, it 'm not, you 've, you have,

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