Ответ:

  1. It was a miracle that she survived at sea for so many days.
  2. Investigators have concluded that lightning ignited the forest fire.
  3. Meteorologists also study many strange weather phenomena.
  4. They were astonished when they saw the explosion in the sky.
  5. The wind grew stronger and created a whirling snowstorm.
  6. After the hurricane, it took years to restore the town back to its original condition.
  7. The wildfire has burned many acres of land.