Can you imagine the questions I had ____our teacher.

问题描述:

Can you imagine the questions I had ____our teacher.
A.asked
B.to ask
C.asking
D.ask

Can you imagine the questions [I had ____our teacher.]
这里是定语从句修饰questions
had + asked过去完成时[时态与主句不符]
had +to ask不得不问
had+asking/ask是不存在的形式