◎ 题干
—Where’s your mother ?
--She has gone shopping with my aunt . She’ll be back ________.
A.in a whileB.for a whichC.once in a whileD.a while
◎ 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’s your mother ? --She has gone shopping with my aunt . She’ll be back ________.A.in a whileB.for a whichC.once in a whileD.a while…”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。