问题
选择题
The crazy fans ________ patiently for two hours and they would wait till the movie star arrived.
A．were waiting
B．had been waiting
C．had waited
D．would wait
答案
答案：B
因为would wait是过去将来时，可见此事发生在过去，再结合for two hours可知，wait这个动作是从过去某一时刻开始一直延续到另一个过去时刻，并且还在等，一直要等到那位影星到来，所以用过去完成进行时：had been doing，因此选B。