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“There were already five people in the car but they managed

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“There were already five people in the car but they managed to take me as well.”“It________ a c
“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 have been
D.couldn't have been
【精析与答案】 D.从上句得知“已有5 个人在车上”,故“一
路上不可能舒适”(含“车内很拥挤”之意).
为什么呀AC
“There were already five people in the car but they managed
mustn't 不用来表示推测.要用can't 或couldn't.后接动词原形(常为be)推测现在和未来.后接have done 推测过去发生过的事.