---Itissosurprisingthatyou’vehikedonMountHuang!      --...

问题详情：

--- It is so surprising that you’ve hiked on Mount Huang!

       --- I didn’t believe I could do it ________ I got to the top.

     A. unless        B. until        C. after       D. as

【回答】

B 

知识点：连词

题型：选择题