One comment

  1. Garry says:

    Dear Serge,

    I think your lessons are very useful. I have been studying with a private
    tutor for a few years and find your program to be an excellent supplement
    for reinforcement. I myself have been an esl (English as a second language teacher for more that 34 years. I speak English, Arabic, French and Spanish. Chinese is my greatest challenge,
    needless to say! Once again, thanks for the help your program provides.

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