【題目】—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

【答案】D

【解析】句意：--車?yán)镆呀?jīng)有五個人了，但是他們還設(shè)法帶著我。--它不可能是一次舒適的旅行。A. can’t be不可能是，是對現(xiàn)在的推測； B. shouldn’t be不應(yīng)該是，是對現(xiàn)在的推測。根據(jù)第一句可知，這里的旅行發(fā)生在過去，所以對現(xiàn)在的推測的選項(xiàng)是不正確的，故排除AB；

must have done“一定做過某事”表示對過去的推測,不能用于否定句，故排除C；D. couldn’t have been表示對過去的推測“過去不可能是”。故選D。

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