-- Could you tell me ? Of course last night.A. when you reached Chengdu B. when did yo

问题补充：

-- Could you tell me ?

-- Of course, last night.

A. when you reached Chengdu

B. when did you reach Chengdu

C. how you came to China

答案：

解析：句意：你能告诉我你何时到的成都吗？当然，昨晚。在宾语从句中只能用陈述句语序，不能用疑问句语序。结合答语last night可知该选A。