北美范文以及问题

大家又看过北美范文的么，我在附件中加入，原版找不到了，附件是经过本人修改了部分错误还有一些单词笔记。不好意思。

其中在多篇出现这样的语句，其中的ha是什么意思呢？请教各位大牛。

eg:

1,Yet these are important events in contemporary life the sort of events we might put ha a time capsule(胶囊,太空舱) for the purpose of capturing our life and times at the turn of this millennium(千禧年)

2,For example, certain legal matters are best left to written documentation: video is of no practical use ha documenting the terms of a complex contractual agreement, incorporation, or the establishment of a trust.