题目内容
4．If you want to become a good Marathon athlete，you must practicerunning（跑步）every day．分析 如果你想成为一名好的马拉松运动员，你必须每天练习跑步．
解答 答案：running 根据practice doing sth．意为"练习做某事"，所以此处只能用动名词．跑步，run，动词．run 的动名词形式为：running，故填：running．
点评 本题主要考查翻译填空，首先要根据所给句子，看空白处所缺的单词是什么．单词确定后，再根据人称，时态，短语，句型，语态等，确定单词的适当形式．
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