Only after many years of hard work ____ that money alone does not lead to happiness and success.
A、I did realize
B、had I realized
C、did I realize
D、I had realized
【正确答案】：C
【题目解析】：C 在经过多年的努力工作之后，我才意识到金钱本身并不能带来幸福和成功。本题考察考生对虚拟语气和倒装句的正确使用。only after 表示“在……之后”，要求后面跟虚拟语气，同时，如果把only after置于句首则要求用倒装语序，综合考虑只有C答案正确。
