(2013·福建，34)Not until he went through real hardship ________ the love we have for our families is important.A. had he realizedB. did he realizeC. he realizedD. he had realized

步骤 1：分析句子结构
句子的主干是"Not until he went through real hardship ________ the love we have for our families is important."，其中"Not until"引导时间状语从句，主句需要部分倒装。

步骤 2：确定时态
根据语境，"went through"使用了一般过去时，因此主句也应使用一般过去时。

步骤 3：确定倒装结构
由于"Not until"引导的从句位于句首，主句需要部分倒装，即助动词"did"需要提到主语"he"之前。