Questions 11 to 18 are based on the conversation you have just heard.

A．Lisa is having a hard time in school.
B．Lisa is expecting a baby.
C．Lisa is often very tired.
D．Lisa is very busy this term.

A．Immediately after he gave back the money.
B．As soon as he saw the young man at the roulette table.
C．On reading the "Thank-you" note.
D．When he heard the young man’s response.