answer: Alice calls Li Hong and says she can't go to see Mrs. Brown tomorrow because her mom is ill.
documents: #Person1#: Hello?
  #Person2#: Hello?
  #Person1#: Can I speak to Li Hong, please?
  #Person2#: Speaking.
  #Person1#: Hi, Li Hong. This is Alice.
  #Person2#: Hi, Alice. How are you?
  #Person1#: Not bad. Li Hong, I am sorry that I can't go to see Mrs. Brown with you tomorrow morning. My mother is ill. I must take care of her.
  #Person2#: I'm sorry to hear that. You'd better stay at home. After all, we can visit Mrs. Brown later
  #Person1#: OK. Bye - bye.
  #Person2#: Bye.