◎ 题干
- What about going for a picnic with us?
- I'm sorry I can't. My mother isn't _________. I have to cook.
[     ]
A. out
B. in
C. at
D. for
◎ 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“—What about going for a picnic with us?— I'm sorry I can't. My mother isn't ______. I have to cook. [ ]A. out B. in C. at D. for …”主要考查了你对  【副词】  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。