A、He is incapable of repairing old cars. B、He may overcharge her for the repairing. C、He may make an incorrect estimate. D、He do

M: Is this table in the corner okay?
W: Sure, we can sit here. Be seated.
M: Joyce, you’ve hardly got anything on your tray.
W: Yeah, I guess I’m just not that hungry.
M: What’s the matter? Aren’t you feeling well?
W: Well, [12]I’ve been really worried. It’s my car. It’s in the repair shop again!
M: Really? What’s wrong this time?
W: I don’t know exactly. Something’s wrong with the brakes I think.
M: Well, at least that shouldn’t cost too much to fix. Parts are cheaper for old American cars like yours. id the mechanic say how much it would cost?
W: He said he’d call me with an estimate later on today.
M: [13] Watch out he doesn’t try to take advantage of you.
W: What do you mean?
M: Well, [13]some car mechanics, if they think that someone doesn’t know much about cars, they might  try to overcharge that person.
W: Maybe so, but I trust this guy. He was recommended by one of my neighbors. He’s done some work for me in the past and his prices seemed to be reasonable.
M: Oh, that’s good to know. Maybe I’ll try using him in the future. [14]By the way, did you need a ride home after class today?
W: Oh, I’ll sure appreciate it. It’s really tough getting around without a car when you live off campus.
M: You are right, [15]I think now you should think about moving back to your dormitory. If I were you, I would be fed up with those troubles.
12. What’s the woman worried about?
13. Why does the man warn the woman of the car mechanic?
14. What does the man offer to help?
15. What does the man suggest the woman do?