◎ 题干

—— I haven’t seen Johnson these days.
—— I think she _______ a conference in Beijing, but I’m not sure.
A.should be attendingB.might be attending
C.could have attendedD.must have attended
◎ 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“—— I haven’t seen Johnson these days.—— I think she _______ a conference in Beijing, but I’m not sure.A.should be attendingB.might be attending C.could have …”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。