answer: Betty advises #Person1# to write about #Person1#'s education first, say something about #Person1#'s work experience in the second part, and talk about #Person1#'s family in the last part.
documents: #Person1#: Betty, would you please read this letter of application I've just written? I'd like to have your opinion. 
  #Person2#: I'd be glad to tell you what I think. 
  #Person1#: Good ! I'm interested in your advice. 
  #Person2#: If I were you, I would change the beginning . You should write about your education first because we like to judge a man by his abilities. 
  #Person1#: Good idea, Betty. What would you think about the second part? 
  #Person2#: I think it's too short. You'd better say something about your work experience. 
  #Person1#: You're right, I'll change it . How about the last part? 
  #Person2#: Very good. But you should talk about your family, too. 
  #Person1#: I agree. I appreciate your helping me.