Only when he failed in the final exam ____up his mind to study harder to catch up with the classmates ahead of him.A.he madeB.he had madeC.had he madeD.did he make
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D解析试题分析：考查倒装句：only+状语置于句首，后面的句子用部分倒装，句意：只有当他期末考试失败，他才下决心更努力学校，赶上其他同学。说明用的是过去时，选D。考点：考查倒装句
点评：值得注意的是only只有接状语时，才能用倒装句，接主语和宾语时，都不能倒装。