◎ 题干
He must stay at home to look after his ____ mother . She has been _____for a week.
A,  ill . sick,      B.  sick ,ill       C. ill ; ill       D. sick ; illness      
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He must stay at home to look after his ____ mother . She has been _____for a week.A, ill . sick, B. sick ,ill C. ill ; ill D. sick ; illness…”主要考查了你对  【助动词】【介词短语】【固定搭配】【疑问词组】  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。