--Could you tell me ?
--Of course, last night.
A. when you reached Beijing
B. why you came to Beijing
C. how you came to Beijing
D. where you came from
网友回答
(答案→)A. when you reached Beijing
B. why you came to Beijing
C. how you came to Beijing
D. where you came from
解析：英语宾语从句中一般为陈述语序。根据下文，当然了，昨晚。可知上文对时间进行提问，故选A。