A、The man’s girlfriend. B、A salesgirl. C、Customer. D、A passer-by. C女士问“土豆怎么卖?”男士回答“一公斤半个英镑，女士。”由此可以推断出女士是来买菜的顾客，故选C。

8. W： I told you that you should not be late for class.
M：Well， I’m sorry. The bus came late and the traffic was heavy.
Q：What might the man be？
9. M：It’s already 7 o’clock. The film will start in 20 minutes.
W：Don’t worry. It only takes us 15 minutes to get there.
Q：When will the film start？
10. W：Would you please sit down and wait for several minutes？
M：I can’t wait. I have to go right now.
Q：What can we learn about the man？
11. M：Dear， can you watch the football match with me？
W：Sorry，I have something to buy.
Q：Where is the woman going？
12. W：Are you coming with us to Li’s birthday party？
M：I’d love to， but my daughter got a cold and I have to take care of her.
Q：Why can’t the man go to Li’s birthday party？
13. W：How much are the potatoes？
M：Half a pound a kilogram， madam.
Q：What’s the woman？
14. M：How do you like it？
W：I like it， but the sleeves are too short and it’s a little tight around the waist.
Q：Where did this conversation most likely take place？