—I expected him to be nervous before his speech, but he was as cool as a cucumber. —He _______ it carefully.
A．could have prepared
B．shouldn’t have prepared
C．must have prepared
D．can’t have prepared
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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 expected him to be nervous before his speech, but he was as cool as a cucumber. —He _______ it carefully. A．could have preparedB．shouldn’t have preparedC．m…”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。
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