Ответ:

  1. Fred saw that the old library had been rebuilt.
  2. Fred saw that the town centre had been turned into a real shopping area.
  3. Fred saw that a new fire station had been opened.
  4. Fred saw that some street names had been changed.
  5. Fred saw that the old local stadium had been closed.
  6. Fred saw that new paintings had been bought for the gallery.
  7. Fred saw that a lot of trees had been planted in the park.
  8. Fred saw that the old oak near the school had been cut down.
  9. Fred saw that the market had been moved away from the central square.