M: Why do people like reading Anna's books? ,F: She encourages people to go on when they're in trouble. Her books give me courage when I lose heart.
(A) M: Her adventurous book seems exciting. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Indeed. I gained much courage from Anna's book. I don't know why people don't like it. (D) M: Wow, Anna's book is really encouraging.
D