问题补充：
---Would you like to go bike riding with us tomorrow? --- .
A. Sorry, I’d love to.
B. Sure, I’d love to.
C. Sure, I have to help my parents.
D. Yes, I can. I have a piano lesson.
答案：
A. Sorry, I’d love to.
(答案→)B. Sure, I’d love to.
C. Sure, I have to help my parents.
D. Yes, I can. I have a piano lesson.
解析：句意：你愿意明天和我们一起去骑单车吗？would you like to do…?你愿意做某事吗？否定的回答可以用sorry，再加上原因；肯定的回答可用sure，I’d love to;结合语境故选B。
