He's angry. He's been angry. But the third one is incorrect. You cannot shorten "he has a house" to "he's a house." You can only shorten "he has got a house" to "he's got a house." [Again, note what @Optimal Cynic claims] More examples: Correct: I have an apple. Correct: I have got an apple. Correct: I've got an apple. Incorrect: I've an apple. More @Wikipedia
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