1． 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
解析 考查倒装句型。此题考查not...until句型的倒装句，其句型为：Not until＋从句＋助动词＋主语＋谓语……，据此排除C、D项；until的主从句均使用一般过去时态，故答案为B。
答案 B
