听力原文:M: I'd like to buy that pen and pencil set. It's $ 29.50 and I only have $ 14.00.
W: I can lend you some money. Let's see, how much do you need?
Q: How much does the man need to borrow to buy the pen and pencil set?
(17)
A.$18.50.
B.$19.50.
C.$15.50.
D.$14.50.