6) John's brother — Его брат (He/His) → His brother
7) The bird — Птица (It/Its) → It
8) John's parents — Его родители (They/Their) → Their parents
9) John's brother — Его брат (He/His) → His brother
Ответ: 6) His brother; 7) It; 8) Their parents; 9) His brother.