-------There were already five people in the car but they managed to take me as well .
------- It a fortable journey .
A. can’t be
B. shouldn’t be
C. mustn’t have been
D. couldn’t have been
网友回答
A. can’t be
B. shouldn’t be
C. mustn’t have been
(答案→)D. couldn’t have been
解析：
本题测试的是情态动词在具体情景中的应用。只有从上文得知“五个人挤在一辆汽车里，又加进去一个人”，才能推断出下文“这次旅行不可能舒服。”才能选对D项。