◎ 题干
--- Where is your mother?
--- She has ______ to Sichuan on business. She has ______ there four times recently.
A.gone, gone B.been, beenC.gone, been D.been, gone
◎ 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“--- Where is your mother?--- She has ______ to Sichuan on business. She has ______ there four times recently.A.gone, gone B.been, beenC.gone, been D.been, gon…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  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。