问题补充:
Only when he told mewhat trouble he was in.
A. did I realize
B. I realized
C. do I realize
D. I realize
答案:
(答案→)A. did I realize
B. I realized
C. do I realize
D. I realize
解析:句意:只有当他告诉我的时候,我才意识到他有什么麻烦。Only+when引导的状语从句提前主谓用部分倒装。又因为前后时态一致,故答案为A。