一道英语选择题（定语从句）
问题描述：
一道英语选择题（定语从句）
the world is full of competitions.as a matter of fact,life is a game【 】you are always competing
答案为什么选 where?
答
人生就像比赛,在比赛中竞争.
life is a game where you are always competing
=life is a game in which you are always competing
=you are always competing in the game
选where,从句中作状语game为什么要用where，用关系副词的话，是不是只能用where？关系副词三个，where，when，whywhere,用在地点上，虽然game是个抽象的概念，也是地点when，时间why,理由