He went out to play football, leaving his homework .A. to unfinishB. to be unfinishedC. un

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A. to unfinish
B. to be unfinished
C. unfinishing
(答案→)D. unfinished
解析：本题是“leave+宾语+宾语补足语”的结构。“homework”与“finish”存在逻辑上的被动关系，
故排除AC选项。根据上下文的意思这儿指“没有完成”，所以用过去分词。句意：他出去踢足球去了，
留下作业没有完成。