◎ 题干
—Perhaps John's not in.
—______.Look,the light's on.
A.Yes,he can be at home
B.No,he couldn't go out
C.Yes,he must be at home
D.No,he needn't go out
◎ 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“—Perhaps John's not in.—______.Look,the light's on.A.Yes,he can be at homeB.No,he couldn't go outC.Yes,he must be at homeD.No,he needn't go out…”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。