题目内容
15．Are you good atrunning （run）？分析 你擅长跑步吗？
解答 答案：running．
根据Are you good at--（run）？可知你擅长跑步吗？be good at表示擅长，后面跟动词ing形式．故填running．
点评 先要掌握句子的意思，然后结合具体的题目一节给出的单词提示，就可以确定正确答案．
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