W: Oh, no. It’s a quarter to five already and I’ll miss my 5 o’clock train.
M: Don’t worry. That clock is half an hour fast. You have enough time to catch it.
Q: When does this conversation take place（）

A. She is a receptionist.
B. She is a painter.
C. She is a color consultant.
D. She is a psychologist.

A. About fifty years before the first modern Olympics.
B. Fifty years ago.
C. When the crawl was developed.
D. After the breast stroke was developed.