as soon as I got home ,the telephone ( )（ringing/rang)
As soon as I got home ,the telephone（rang)为什么？As soon as I got home 是时间状语从句，,the telephone rang是主句。凡是句子都得具备【主谓(宾)】，这里有【主语the telephone】，ringing是现在分词，不能做谓语，只有 rang才能做谓语。