◎ 题干
---- There is a lot of smoke coming out of the teaching-building there.
---- Really? It _____ be a fire, most probably.
A.canB.ought toC.have toD.must
◎ 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“ ---- There is a lot of smoke coming out of the teaching-building there.---- Really? It _____ be a fire, most probably.A.canB.ought toC.have toD.must…”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。