We met Rihana and her husband at a party two months ago. ______ we've had no further communication.
【正确答案】 B
【答案解析】我们两个月前在一个聚会上碰到过蕾哈娜和她先生。自此以后,再也没有进一步联系过。A.Thereof“其,其中” B.Thereafter“其后,此后”C.Thereby“借此,由此” D.Tnereabouts“在那附近,大约”