they went home,
A.Their work had been finished;singing and laughing
B.They had finished their work;sang and laughed
C.Their work finished;singing and laughing
D.After their work finished;singing and laughing
出自:专升本英语

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块