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WHO'S/WHOSE |
This is one of those cases where it is important to remember that possessive pronouns never take apostrophes, even though possessive nouns do (see it's/its). "Who's" always and forever means only "who is," as in "Who's that guy with the droopy mustache?" or " who has," as in "Who's been eating my porridge?" "Whose" is the possessive form of "who" and is used as follows: "Whose dirty socks are these on the breakfast table?"