The film for half an hour when she got to the cinema.A. has been overB. has finished C.

问题补充：

The film for half an hour when she got to the cinema.

A. has been over

B. has finished

C. had been over

D. had finished

答案：

A. has been over

B. has finished

(答案→)C. had been over

D. had finished

解析：句意:当她来到电影院的时候，电影已经结束半个小时了。由句意可知当她到电影院时，电影已经结束了，应用过去完成时。finish 结束，是一个瞬间性动词，不能与表示一段时间的状语连用，故B、D不可以。故选C。