◎ 题干
– Why did they help Mrs Brown with her work?
– Because she was _____.
A.an old friend of themB.the friend of them
C.on the their friendD.a good friend of theirs
◎ 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“– Why did they help Mrs Brown with her work?– Because she was _____.A.an old friend of themB.the friend of them C.on the their friendD.a good friend of theirs…”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。