【单选题】 —There were already five people in the car but they managed to take me as well. —It ______a comfortable journey.
A．can't be
B．shouldn't be
C．mustn't be
D．couldn't have been
网考网参考答案：D
网考网解析：
[解析] 表示对过去发生事情的推测，应用情态动词+have done结构。题干中谓语动词用了一般过去时，说明是过去发生的事情，故应选D。
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