After I realize the VDO in youtube that I use some part of the file in the book was not clear. So here is the full PDF file and exercise. You can download it for free.
![](http://www.speakthaieasy.com/wp-content/uploads/2019/07/free.png)
After I realize the VDO in youtube that I use some part of the file in the book was not clear. So here is the full PDF file and exercise. You can download it for free.