请问一个英语问题,She said she had never spoken before an audience.她说

帮忙做下She said she had never heard me ( ) so well before.A.to she had never travelled on a train before,她之前从未坐过火车旅行.(新概念英语 Lucy said that she had never heard -----music before 1such a She said she had been to Dalian a year before [英文]Never before had she seen such a wide river. [意思]她过去从未见过 She said （that）she had never been to Paris. She __ an expression such as l had never seen before.A made Lucy said she had not heard ( )music before. as she had never worn any make-up before, 有关过去完成时的疑问过去完成时的结构是 主语+had+过去分词她说她已经吃饭了she said that she had 英语翻译她说她感觉好多了.1.she said she felt much better.2.she said she I had never kown it ___ she told me.请问横线处为何填until而不填before