The hosts apologized for ______ that some of their guests might be vegetarians.
A、having not considered
B、not having considered
C、having not been considering
D、not considering
【正确答案】：B
【题目解析】：译文：主人为没有考虑到一些客人可能是素食者而道歉。句中“为……而道歉"可用apologize for doing sth./sth.。另外，对于“没有考虑到某事而道歉”可用apologize for not considering sth.。又因为“考虑”这个动作发生在“道歉”这个动作之前，所以要用过去完成时，即：not having considered。答案为B。
