听力原文：W: My mother told me to keep away from the swimming pool
M: Did she？ Then shall we go to the park to roller-skate？
W: Good idea! I am crazy about roller-skates! When shall we go？
M: What time suits you？ It doesn't make any difference to me.
W: Shall we meet in front of the school gate at 8:00 a.m. and go to the park together？
M: No problem. By the way, you have to wear a helmet when roller-skating. Do you have one？
W: Oh, dear, I don't.
M: Don't worry. I have two helmets. I can lend you one tomorrow.
(8)

A. Because she dislikes swimming.
Because her mother forbids her to swim.
C. Because she has to go to roller-skate.
D. Because she is crazy about roller-skates.