— What a beautiful dress！Can you tell me ?— Just the day before yesterday.A. when do you b

问题补充：

— What a beautiful dress！Can you tell me ?

— Just the day before yesterday.

A. when do you buy it

B. when you buy it

C. when you bought it

D. when did you buy it

答案：

A. when do you buy it

B. when you buy it

(答案→)C. when you bought it

D. when did you buy it

解析：英语宾语从句中一般为陈述语序。根据下文，就是在前天。可知上文问的是过去的时间。故选C，你能告诉我你什么时候买的吗？