问题补充：
–Why do you like climbing mountains?
--Because they are there and climbing is thing I have ever done.
A. the more exciting
B. the most exciting
C. the more excited
D. the most excited
答案：
A. the more exciting
(答案→)B. the most exciting
C. the more excited
D. the most excited
解析：句意：你为什么喜欢爬山？因为它们在那里而且爬山是我曾经做过的最令人兴奋的事情。exciting多音节词，形容词的最高级形式用the most，exciting表示“令人兴奋的”指物，excited指人，表示感到兴奋的，故选B
