At last,the time came for us to attack,____ we had been waiting for a long time.[A] which [B] for which [C] when [D] at which 选哪个?

问题描述:

At last,the time came for us to attack,____ we had been waiting for a long time.
[A] which
[B] for which
[C] when
[D] at which
选哪个?

选c啊 刚才说错了

[B]
we had been waiting for which for a long time.