Ответ:

  1. Mr Otis was the American ambassador.
  2. Mr Otis bought Canterville Chase.
  3. People said that Canterville Chase was haunted.
  4. Mr Otis woke up because of a noise outside his room.
  5. Outside his bedroom, he saw an old man.
  6. Mr Otis gave the ghost a small bottle of lubricant.