问题补充：
When we got to there, the host his speech and the performance .
A. has finished; began
B. had just finished; had begun
C. had just finished; was about to begin
D. just finished; began
答案：
A. has finished; began
B. had just finished; had begun
(答案→)C. had just finished; was about to begin
D. just finished; began
解析：本题考察时态。“主人”在“我们”到达前完成演讲，故用过去完成时，而表演即将开始，故用过去将来时。
