3 Comments

  1. Dj
    August 7, 2012 @ 11:17 am

    why no audio?

  2. Mehdi Bagheri
    October 19, 2014 @ 11:35 am

    for citation, how do you recommend?
    herfeye shoma chist?
    ba tashakor

  3. Monika
    February 2, 2015 @ 1:48 pm

    Hi,
    how is “The man who is sitting in the chair is my father.” different from “The man who is walking is my friend.” that in first case we should use present perfect and in second present continuous?