Hi I think you have the first one pretty much right - I'll put on my old Rolling Stones album - Don't you have anything interesting? With the second one, in the circumstances you give, I would use the negative to the second person and the positive to a third person: - (Mr A to Mr B): My advertisement idea is a picture of a house - (Mr B to Mr A): Don't you have something interesting? - (Mr B, turning to Mr C): Do you have something interesting?
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