Football is popular in the world.Football （ ）（）（）by people i

Football （is ）（well ）（known）by people in the world．
再问： 不对吧
再答： 例如: In other words, the standards should reflect best common practice, which should be well known by designers. 换句话说，这些标准应该反映的是最好的通用的实践经验，并且应该为设计师们所熟知。
再问： well－known 有连字符的