A、To see some relatives. B、To buy some toys. C、To sightsee. D、To go to the seashore. C 对话中谈到她去芝加哥，而且打算住在Sue的父母家，文中也直接提到spend Sat

M: How was your weekend?
W: It was awful.
M: Awful? Really? But I thought you planed to be going on a trip. Did you cancel it?
W: No. Unfortunately. I would have been better off if we had canceled it.
M: What do you mean?
W: Well, five of us were supposed to go to Chicago in Lisa’s car...
M: Yeah?
W: And we were going to stay at Sue’s parents’ house, which is in Chicago...
M: Right?
W: So it’s about a four-hour trip, and we were going to get there on Friday evening, and spend Saturday sight-seeing, and come back last night so we could go to classes this morning.
M: OK. That sounds like a good plan. So what went wrong?
W: What didn’t go wrong? First of all, we were all crammed into Lisa’s tiny car with all our bags.
M: Sounds pretty uncomfortable.
W: Hold on. I’m just getting started. Remember how hot it was this weekend?
M: Yeah, it was so bad I had to get out of the library. I ended up going to the beach both days.
W: Well, we were stuck in Lisa’s car Friday afternoon and the air conditioing wasn’t working.
M: Why didn’t you open the windows?
W: We did, but the breezes blowing in were also hot.
M: I think you were glad to get to Chicago.
W: That’s the worst part. We never made it. The car broke down and we were waiting for the car to be repaired the whole of Saturday in some small town near the Indiana border.
M: Couldn’t Sue’s parents come to pick you up?
W: They were out of town.