◎ 题干
My brother often __________ my mum ________ the house on Sunday.
[     ]
A. help; cleans
B. help; clean
C. helps; clean
D. helps; cleans
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“My brother often __________ my mum ________ the house on Sunday.[ ]A. help; cleansB. help; cleanC. helps; cleanD. helps; cleans…”主要考查了你对  【实义动词的单数第三人称形式】【固定搭配】  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。