摘要： In the study, I found my son at a desk, with his attention on a book. A. sitting; fixing B. sit; fixed C. sitting; to be fixed D. seated; fixed 分析:此题考查不定式与分词作宾补的区别以及短语fix one's attention的用法.因为强调found的动作与sit同时进行.而省去to的不定式sit作宾补表动作的完成.但sitting和seated皆可.第二空中.attention原为fix的逻辑宾语.所以应选fixed作宾补足语.故此题正确答案为:D.

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