Only then ________ that he had lost a go

问题选择题

Only then ________ that he had lost a good chance of achieving his dream.

A．he realized

B．realized he

C．did he realize

D．will he realize

答案

答案：C

题目分析：句意：知道那时他才意识到他错过了一个实现梦想的好机会。时态应为过去时。Only then放在句首需要部分倒装。故选C.