A. Because the dentist came at last.
B. Because she saw a picture on the ceiling.
C. Because she could relax in the chair.
D. Because the assistant kept comforting her.
4. What did the author learn from her experience most probably?
A. Strike while the iron is hot.
B. Have a good word for one's friend.
C. Put oneself in others' shoes.
D. A friend in need is a friend indeed.