◎ 题干
With all my attention _______ my homework, I didn’t even notice my father standing by me.
A.to fix on B.fixed on
C.fixing on D.to be fixed on
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“With all my attention _______ my homework, I didn’t even notice my father standing by me. A.to fix onB.fixed onC.fixing on D.to be fixed on…”主要考查了你对  【独立主格结构】  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。