It wasn’t until then their marriage was breaking up because they had little in mon.
A. did I realize
B. that I realized
C. had I realize
D. when I realized
网友回答
A. did I realize
B. that I realized
C. had I realize
D. when I realized
解析：
这题考查强调句：It is/was not until… that…“直到。。。才”，句意是：直到那个时候他们才意识到因为缺乏共同语言，他们的婚姻快解体了。选B。