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：在结婚之前他们已经相爱两年了。Fall in love 为非延续性动词短语，不能与 for two years 连用，故排除 A、D 项。be in love 为表示状态的动词短语，可以与 for two years 连用。且 fall in love 这个动作发生在“got married”之前，故用过去完成时。选C。
