英语翻译英语翻译1句：教授,我昨天没来,&没有组（昨天教授分组的时候我没来）越简单明了越地道越好
问题描述：
英语翻译
英语翻译1句：教授,我昨天没来,&没有组
（昨天教授分组的时候我没来）
越简单明了越地道越好
答
Professor, I didn't come here yesterday, so I haven't my own group
答
I was absent yesterday,so I don't konw which group I belong to
答
Sorry professor, I was absent when the groups were arranged yesterday. So I don't have a group now.
答
Professor，as I wasn't here yesterday,I'm not in a group now.
答
Professor,I wasn't here yesterday,that's why I don't have a group yet./
Professor,I was absent yesterday,that's why I don't belong to any group.