A、Walk the dog. B、Clean the house. C、Go to the doctor’s. D、Finish her assignment. B

M: So, Susan, do you have anything planned for this Saturday?
W: I’m kind of busy. Why do you ask?
M: I was wondering if you’d like to get together and do something, like watching a movie or taking a walk down by the lake.
W: I’d love to, but I’m really going to be busy all day on Saturday.
M: What do you have to do on that day?
W: (12) First, I have to help my mom clean the house in the morning, and then I have a dentist appointment at 12:30. I can’t miss that because I’ve canceled twice before.
M: What about hanging out after that?
W: Well, I’m going to be running around all day. After the dentist appointment, (13)I need to meet Julie at 2:00 to help her with her science project that’s due on Monday morning at school.
M: OK. But are you free after that?
W: Hardly. Then I have to pick my brother up from soccer practice at 4:30, and cook dinner for the family at 5:30. (14)I feel like a slave sometimes.
M: Wow, sounds like you’re going to have a full day. Why don’t I come over later in the evening, and we can make some popcorn and watch a movie.
W: Oh, that’d be great, (15)but our video machine is broken.
M: Well, let’s just play a game or something.
W: Sounds good, but give me a call before you come. My mom might try to come up with something else for me to do.
　　12.  What does Susan have to do on Saturday morning?
　　13.  What time will Susan meet Julie?
　　14.  How does Susan feel about her schedule on Saturday?
　　15.  Why can’t they watch a video at Susan’s house?