salamzaban: could you please explain for us how you are studying?  yes. of course ,i study exactly the lessons with your comments in a each lesson . but i study opd with a software’s opd… hamidkaveh.7.1.090.09.95

Hi sir it ,s  a along time  that you did n,t get my report. in the  past days , i studied opd 4 section. it ,s get a long time of me. but don’t worry i finished… hamidkaveh.7.090.09.95

hi sir i finished the 8 lesson. i started the opd,s 6 chapter. in a each chapter of opd ,there are many conversation. i decide  to writ those conversations  and read them , many times.… hamidkaveh.8.090.09.95