◎ 题干
--I'm told that John had another car accident this morning.
--I believe not. He ________so careless.
A.shouldn't have beenB.wouldn't have been
C.couldn't have beenD.mustn't have been
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--I'm told that John had another car accident this morning.--I believe not. He ________so careless.A.shouldn't have beenB.wouldn't have beenC.couldn't hav…”主要考查了你对  【虚拟语气】【情态动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。