◎ 题干
—You shouldn’t have shouted at your mother. It really hurt her.
—Exactly. I ________ crazy at the time.
A.must beB.could be C.must have beenD.could 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“—You shouldn’t have shouted at your mother. It really hurt her.—Exactly. I ________ crazy at the time. A.must beB.could be C.must have beenD.could have been…”主要考查了你对  【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。