由于恶劣天气，户外音乐会在最后一刻取消了。

Due to bad weather, there was a ___last ___minute cancellation of the outdoor concert.

如果你需要，我明天可以来帮你做最后的准备。

I could come tomorrow to help you with the ___last ___minute preparations if you want me to.

他总是在会议前对演示文稿做最后一刻的修改。

He always makes ___last ___minute changes to his presentations before the meeting.