问题补充：
— What a new computer! Can you tell me ? — Just the day before yesterday.
A. how much you paid for it
B. how much did you pay for it
C. when you bought it
D. when did you buy it
答案：
A. how much you paid for it
B. how much did you pay for 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句语序,根据答语可知前文问的是时间,故选C.
