单选题 6.   After having lived a few weeks with him, I felt sorry for to be so unfriendly to him at first.
【正确答案】 C
【答案解析】 应改为being。本题考查非谓语动词。for为介词,其后应用名词或动名词形式。故应将to be改为being。
   和他住了几星期之后,我为之前对他的不友好行为感到抱歉。