Ответ:

  1. A: Whose computer is this? B: It’s Tina’s. It’s her computer. It’s hers.
  2. A: Whose camera is this? B: It’s Bob’s. It’s his camera. It’s his.
  3. A: Whose watch is this? B: It’s Tony’s. It’s his watch. It’s his.
  4. A: Whose skateboard is this? B: It’s Bill’s. It’s his skateboard. It’s his.
  5. A: Whose football is this? B: It’s Paul and Ann’s. It’s their football. It’s theirs.
  6. A: Whose alarm clock is this? B: It’s Pat’s. It’s his or her alarm clock. It’s his or hers.