---Could you please go skating with us this Sunday?
--- . I have to finish my homework
A. Yes, sure
B. I am sorry
C. Excuse me
D. Good idea
网友回答
A. Yes, sure
(答案→)B. I am sorry
C. Excuse me
D. Good idea
解析：本题考查交际用语。I am sorry对不起，根据后文的一句可知答案为B。句意：——这个周日你能和我们去滑冰么？——对不起，我要完成家庭作业。