As a professional, I found that your system is the best amongst the several I had tried, and it has helped me tremendously!

I am a civil engineer with two master degrees accredited in the United States, and I really needed to improve my spoken English in order to better fulfill my professional desires and in order to be more useful in this country… and I DID. Naturally, one needs practice and repetition, especially when you are a mature person trying to master a new language. So thank you!