◎ 题干

---Mary’s score on the test is the highest in her class.
---Really? She ______ have studied very hard.
A.mayB.ought toC.mustD.should
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“---Mary’s score on the test is the highest in her class. ---Really? She ______ have studied very hard.A.mayB.ought toC.mustD.should…”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。