-Therewere already five people in the car.butthey managed to take me as well．-It
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-Therewere already five people in the car，butthey managed to take me as well．
-It_______a comfortable journey．
A.can't be
B.mustn't have been
C.shouldn'tbe
D.couldn’t have been
试题答案
D
couldn't have been表达对过去情况的推测。