◎ 题干
Ann helps Lily with her homework ______ eight o'clock ______ Sunday.
[     ]
A. on;  in
B. in;  on
C. at;  on
D. at;  in
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Ann helps Lily with her homework ______ eight o'clock ______ Sunday. [ ]A. on;inB. in;onC. at;onD. at;in…”主要考查了你对  【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。