kate ——some japanese by the time she—— nine

题目

kate ——some japanese by the time she—— nine
A.has learned,was
B,had learned,was
C,learned,was
D,had learned,had been
by the time 不是完成时的吗?

答案

by the time是完成时的啊,这句话意思是,Kate在他9岁之前就学了一些日语,第二个空应填was,要发生在过去的过去,则为had learned,选B