1) Whose is the laptop? a) It's Bill. b) It's Bill's. c) It's Mark's. d) It's Mark. 2) Whose are the cars? a) They're Bill's. b) They're Mark. c) They are Mark's. d) They are Bill. 3) Whose is the wallet? a) It's Mark's. b) It is Bill's. c) It is Mark. d) It's Bill. 4) Whose are the magazines? a) They're Bill. b) They are Mark's. c) They are Mark. d) They are Bill's. 5) Whose is the watch? a) It's Bill's. b) It's Mark's. c) It's Mark. d) It's Bill. 6) Whose are the glasses? a) They're Bill's. b) They are Mark. c) They're Bill. d) They're Mark's.

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