they were invited to an important ball ()the first time ()livesthey were invited to an important ball (for)the first time (in)livesA：for,in B：at,in C：on,for D：in,with为什么要选A而不选其他三个呢?
问题描述：
they were invited to an important ball ()the first time ()lives
they were invited to an important ball (for)the first time (in)livesA：for,in B：at,in C：on,for D：in,with为什么要选A而不选其他三个呢?
答
前言They were invited to an important ball （）the first time （）lives.A：for,in B：at,in C：on,for D：in,with答案：A翻译：在他们的生命中,他们第一次被邀请参加一场很重要的球赛.解析：for the first time固定短语,表示作为第一次,首次；第一次.表示有生以来或一段时间内第一次做某事.in lives 在生命力/在生活中