题目内容
15．John did his best but he failed（失败） in the end．分析 约翰尽力了但是最后还是失败了．
解答 答案：failed．
根据所给汉语提示结合语境推测句意是"约翰尽力了但是最后还是失败了．"，此处根据设空处前面的did推断应该填动词过去式，表述的是过去的事情，"失败"的英文单词是fail，所以答案是：failed
点评 做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化．
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