问题
选择题
---What did the policeman say to you just now?
--- He asked _______ when the accident happened.
A．what I was doing
B．what was I doing
C．what I am doing
D．what am I doing
答案
答案：A
所选答案应为ask的宾语，宾语从句要用陈诉句语序，排除答案A和C；因为是问当事故发生时我在干什么，该用过去时，故选A。