- …only then did we decide to answer violence with violence.……只有到这个时候，我们才决定用暴力反抗暴力。
Only then did she realize she had made mistakes.
Only when he came back did I go to bed.
Only you understand me.只有你了解我。
I failed in the final examination last term and only then the importance of studies.
- I realized B. I had realized
- had I realized D. did I realize