We met Mary and her husband at a party two months ago. ______ we've had no further communication.
【正确答案】 C
【答案解析】解析:thereafter“其后,此后”,可用于句首连接句子;因此c为正确选项。thereof“其,其中”;thereby“借此,由此”;thereabouts“在那附近,大约”。A,B,D均不符合句子要求。