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No, I don’t Yes, I do Not too much Oh, yes, but I wish I didn’t
smoked have smoked has smoked don’t smoke
operated had been operating was operating am operating
operated had been operating was operating am operating
have worked had worked have been working worked
fourteen – years – olds fourteen years – olds fourteen – year—olds fourteen – years olds
in; since of; since in; until of; until
taught was teaching am teaching had been teaching
No, I don’t Yes, I do Not too much Oh, yes, but I wish I didn’t
that I don’t paint that I didn’t paint since I paint ago I painted
didn’t smoke have smoked smoked began to smoke
have been；left had been；left am；had left come；had left
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