Question

Not until he went through real hardship _____the love we have for our families is important.

A. had he realized　 　　　 B. did he realize　　　　 C. he realized　　　　 D. he had realized

Answer 1

 B。本题考查倒装结构。含有否定意义的副词、连词或短语放在句首时，要用部分倒装结构。由he went through real hardship可知动作已经发生，与现在的动作没有关系，用一般过去式，所以B正确。D选项的意思是先认识后经历，不符合本文所表达的意思。

【句意】直到他经历了真正的艰难之后才意识到我们对家庭的爱是很重要的。