I come back with DUO!
I got to know Duo last year. I played it and I enjoyed it. Then I stopped. While not using Duo, I still find that I have little forwards in the language that I learn. It makes me surprise. Now, I am determined to learn English well with Duo: speak and understand English well. I want to see and understand well the English movies or English programs without the translation subtitles. After practicing on Duo seriously, after only one week I realized that I had improved significantly: I listened better, had better pronunciation. I could communicate with a customer in English last week. That's so great! Thanks to Duo and all the people who built Duo! Good night!