◎ 题干
—What is she __________ for vacation?
—She __________ her little sister.

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A. doing;  babysitting
B. do;  babysitting
C. doing;  is babysitting
D. doing;  babysit
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—What is she __________ for vacation? —She __________ her little sister. [ ]A. doing; babysitting B. do; babysitting C. doing; is babysitting D. doing;…”主要考查了你对  【现在进行时】  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。