【题目】—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 depends

【答案】C
【解析】句意：——旅行不该超过一小时。——你一定在开玩笑，至少两小时了，A.I guess so”我想是这样“；B.That's it”就是它“；C.You must be joking”你一定在开玩笑“；D. It depends”看情况“。根据情景，选C。