问题补充：
They with each other for two years before they got married.
A. had fallen in love
B. got in love
C. had been in love
D. fell in love
答案：
A. had fallen in love
B. got in love
(答案→)C. had been in love
D. fell in love
解析：考查时态，句意：在结婚前他们相爱了两年。可知相爱是发生在过去的过去，用过去完成时，而且和一段时间连用，要用表示状态的动词，选C。
