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对话中女士提到：“I played

M: Hey, Sophie, looks like you’ve got some sun this weekend.
W: Yeah, I guess so. I spent the weekend at the beach.
M: Oh, 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:[9]So what are you doing back here already?
W: Oh, I have a paper 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 lying on the sand obviously.
W: I jogged up and down at the beach and[10]I played some volleyball. You know I never realized how hard it is to run on the sand. I couldn’t even get through a whole game before I had to sit down. It’s much easier to run on the wet sand near the water.
M: Not to mention cooler.[11]Did you go swimming?
W: I wanted to, but they said the water isn’t warm enough for that until a couple of months from now. So I just waded in up to my knees.
M: Sounds so relaxing. I wish I could get away to the beach like that.
9. Why did the woman come back so soon?
10. Why did the woman have to stop playing in the volleyball game?
11. Why didn’t the woman go swimming?