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He sits around too much. He ísn't fit --> if he....
She's very thin; perhaps that's why she feels so much --> if she ....
He never polishes his shoes, so he never looks smart --> if he .....
He can't park near his office; that's why he doesn't come by car --> if he
My house is guarded by two big dogs. That's the only reason it isn't broken into every night --> if my house