题目内容
根据所给汉语提示完成下列句子。
那个小孩在登山中意外地摔伤了腿。
That child broke his leg ________ ________ when he was climbing the mountain.
答案:by,accident
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题目内容
根据所给汉语提示完成下列句子。
那个小孩在登山中意外地摔伤了腿。
That child broke his leg ________ ________ when he was climbing the mountain.