问题补充：
---Didn’t you go to the zoo last Sunday?
---. I stayed at home all day.
A. Yes, I did.
B. Yes, I didn’t
C. No, I didn’t
D. No, I did.
答案：
A. Yes, I did.
B. Yes, I didn’t
(答案→)C. No, I didn’t
D. No, I did.
解析：否定疑问句的回答要根据事实，事实是肯定的，用yes，事实 如果为否定的，用no回答，故选C
