For copyright purposes and to avoid plagiarism, we cannot directly give PDFs away, but you can download within the flipbook viewer (on tablets or phone) to read off-line.

In addition, there is also a good solution for you to create your own PDFs from the materials , please see instructions below (we suggested to download 1 or 2 units at a time) , please see instructions here 

Hope that helps and let us know any questions at business@learnhotenglish.com