◎ 题干
---Why hasn’t Jane arrived yet?  
---She ______ again in the morning.
A.shouldn’t have overslept
B.may have turned off the alarm clock
C.must have no one to call her
D.should have someone to wake her up
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ---Why hasn’t Jane arrived yet?---She ______ again in the morning.A.shouldn’t have oversleptB.may have turned off the alarm clockC.must have no one to call …”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。