A、She had to, go home. B、She was too tired to continue. C、She had to finish her schoolwork. D、She was thirsty. B

M: Hey, Karen. Looks like you got some sun this weekend.
W: Yeah, I guess so. I spent the weekend at the beach.
M: Oh yeah? That’s great! Where did you stay?
W: Some friends of my parents live out there and they invited me for as long as I wanted to stay.
M: So what are you doing back here already?
W: Oh, I have a paper I need to work on, and I just couldn’t do any serious studying at the beach.
M: I don’t blame you. So what did you do out there... I mean besides lie out in the sun, obviously?
W: I jogged up and down the beach and I played some volleyball. You know, I never realized how hard it is to run on sand. I couldn’t even get through a whole game before I had to sit down. It’s much easier to run in the wet sand near the water.
M: Not to mention cooler. Did you go swimming?
W: I wanted to, but they said the water isn’t warm enough for that until a couple months from now, so I just waded in up to my knees.
M: It all sounds so relaxing. I wish I could get away to the beach like that.
W: It looks like you could use it. Don’t tell me you spent the weekend in the library again.
Q. 11. How did the woman spend last weekend?
Q. 12.Why did the woman come home so soon?
Q. 13.Why did the woman have to stop playing in the volleyball game?
Q. 14.Why didn’t the woman go swimming?