The doctor came up and asked me the day before.A. what had I eatenB. what I have eatenC. w

问题补充：

The doctor came up and asked me the day before.

A. what had I eaten

B. what I have eaten

C. what have I eaten

D. what I had eaten

答案：

A. what had I eaten

B. what I have eaten

C. what have I eaten

(答案→)D. what I had eaten

解析：：考察宾语从句的语序。所有的名词性从句都使用陈述语序，排除AC。共计时态可知使用过去完成时。句意：医生走过来问我：前天吃了什么东西。故D正确。