Sentence 1: Carrie was worn out from carrying her books all day. 
 Sentence 3: Carrie wasn't paying attention and tripped over her own feet 
 Sentence 4:  Crying, Carrie almost made the decision to leave her books behind 
 Sentence 5:  A friend of her's happily knelt down and helped her out with her woes 
 Option 1: Her dog had obliterated her backpack and set her up to suffer. 
 Option 2: She needed a locker.