_____________,theywenthome,________________.A.Theirworkhadbeenfinished;sing

_____________ ,they went home,________________.A.Their work had been finished; singing and laughingB.They had finished their work; sang and laughed C.Their work finished; singing and laughingD.after their work finished; singing and laughing

C解析试题分析：考查独立主格结构，分析句子，they went home是简单句，前面如果没有连词，就是独立主格结构，their work是逻辑主语，后面接非谓语动词，排除A，B，D项是有连词after的，所以后面的句子应该是their work had been finished;第二空使用现在分词做伴随状语，是回家的过程中同时做的事情，不是一连串并列动作。不能用sang and laughed ，选C。考点：考查独立主格结构点评：当分词做状语的时候，如果分词的逻辑主语与句子主语没有关系，就在分词的前面直接加上逻辑主语，形成独立主格结构，该结构在作用上久相当于一个状语从句。

我好好复习下