◎ 题干
------ Do you know where Li Ming is working _____?  ------ Maybe in Guangzhou, I think.
A.at firstB.at leastC.at lastD.at present
◎ 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“------ Do you know where Li Ming is working _____? ------ Maybe in Guangzhou, I think.A.at firstB.at leastC.at lastD.at present…”主要考查了你对  【介词短语】【介词】  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。