A、Comedies. B、Horror films. C、Mystery films. D、Crime films. C当男士表示自己喜欢“mystery films”并问女士是否喜欢时，她的回答是肯定的，故选C。

M: Do you feel like going to the cinema?
W: Oh, yes. What kind of films do you like?
M: Well, I like all sorts of films, but my favorite sorts are those like Star Wars. You know, the fantasy, special effect ones that you can escape into another world. (17) I also like mystery films, do you like mystery films?
W: (17) Yes, but I don’t like horror films because they really give me nightmares.
M: (18) I don’t like horror films either. They’re sort of stupid and unbelievable. I do like crime films, you know, where you can follow the detective and try to guess who the murderer is.
W: What about a comedy or musical?
M: No, I’m not interested.
W: (19) What about ringing up the ABC and find out what’s on? Then we can decide.
M: (19) Ok. That’s definitely the best thing we ought to do because I haven’t got an evening paper.
Q17: What films do both the man and the woman like?
Q18: What does the man think of horror films?
Q19: What do they decide to do?