—The trip shouldn’t take more than an hour.
— It is at least two hours.
A. I guess so
B. That’s it
C. You must be joking
D. It all depends
网友回答
A. I guess so
B. That’s it
(答案→)C. You must be joking
D. It all depends
解析：I guess so我猜是这样吧；That’s it就是它；You must be joking你一定在开玩笑吧；It all depends视情况而定。句意：--这次旅行花费的时间不会超过一小时吧。--你一定在开玩笑吧，它至少需要两个小时。根据句意故选C。