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　考查倒装。not until或其他否定词或词组放在句首时，主句用部分倒装结构。句意为：直到他经历了真正的苦难后，他才意识到我们对家庭的爱是多么重要。过去完成时表示该动作(realize)先于从句的动作(went through)，不合语境，故用一般过去时。