such being the case 本来就是一种常用语句，也可以说that being the case。。。意思都是：既然是这样，（那么。。。）字面翻译 such/that (那）being the case (是这样、成立的话）A/C 都语法不通。B such is the case是陈述句，就没有下半段了。
