It's Christmas Eve, and Sarah is so excited to see the falling snow mounding up around the windowpanes. She could hardly wait to help her mother hang the strands of popcorn and fresh cranberries on the Christmas tree along with all the bright lights, tinsel, and decorations. Dusty, the family's dog, is enjoying all the fun, too, as he sniffs out all the Christmas fare lying around the room. "It's now time to get ready for bed," Mother says. "You too,...