听力原文：M: Hi, Helen, I've been looking for you!
W: Really？ Such a coincidence. I am also looking for you.
M: You don't know how difficult it is to find a car I want.
W: Have you been to the second-hand market？
M: Yes, but... didn't you tell me that when cars get older they get cheaper？
W: Sure! What happened？
M: I called in response to an ad yesterday for a very old car. It was priced somewhere over $10,000! Do you think I can get anything for $3,500？
W: Sure. I just heard about something I've wanted to talk to you about.
M: Oh, that's why you are looking for me, isn't it？
W: Yeah. My uncle's mother-in-law is 86 now, and recently her eyesight became very bad. That means she can't drive anymore, but she's got a 1978 Buick Century that would be perfect for you. M: Is it still good？ How much do you think she wants？
W: It's really very good — only 43,000 miles on it. There's no rust on it, and the interior is like new. But there is certainly something wrong with it: it needs a tune-up, a new set of tires and if you buy it you'd better put all new hoses and ignition wires on it. They crack when they get old.
M: Anything else？
W: Maybe in about 10,000 miles the brakes would need attention.
M: That sounds like quite a bit of expense already!
W: But look, everything it needs will probably cost $500 or less. You could buy it for $2,150, I'm sure. So for a lot less than the $3,500 or so, you'd have a really good car that would last for years. M: It sounds better when you put it that way. When can I see it？
W: How about right now？
M: All right. Let's go.
Questions 19 to 22 are based on the conversation you have just heard.
19. What kind of a car does the man plan to buy？
20. Why can't the old lady drive anymore？
21. What do we learn about the car the woman recommends？
22. How much does the man need to spend on the car？
(23)

A cheap new car.
B. An extravagant new car.
C. An old Buick Century.
D. A used car that's a bargain.