如何使用 "until" 造句

1. The official 2012 celebrations are being delayed until june .: 2012年的官方庆典推迟至6月举行。

2. Until 1935 , there was no federal unemployment insurance .: 直至1935年，才出现了联邦失业保险。

3. That is until the other day .: 直到前两天一直如此。

4. Why did it take until 2010 ?: 为什么要到2010才被公布？

5. Until recently , it was inaccessible to visitors .: 目前为止，还很难达到向参观者开放。