Ответ:

  1. Ivan is always excited about new ideas.
  2. Pyotr is easily frightened by changes.
  3. The story was about two friends interested in different things.
  4. Ivan was surprised by Pyotr’s reaction.
  5. Pyotr felt worried about the future.
  6. The conflict between the friends was disappointing.

Окончание -ed обычно описывает чувство человека, а -ing — свойство предмета или ситуации.