Sandra and Betty are sitting in the park, Sandra asks Betty:' Tell me about your family'
  
   
  
  Betty:' My family is a rather small one, with only three people, my father, my mother and me. My father is a doctor. My mother is a middle-school teacher. I am still a student. My mother is very gentle and soft while my father is a little bit hot-tempered. We love each other very much. Although sometimes we might become angry at one another, very soon we will forget the unpleasant things. We're a happy family, how about you?'
  
   
  
  Sandra:' I have a big family with seven people, my grandparents, parents, two brothers and me. We take care of one another, share housework, and often communicate all together.'