???? ??? ???? ????? ????? ??? ?? ????? ??? ???? ??? ??????. ?????? ??????? ????? ??? ?????? ?????? ??? ?? ???. ???? ???? ??? ??? ?????. ?? ???? ??????? ?????? ??? ??????? ????? ??????. ???? ???????? ??????. ???? ??? ??? ?? ??????: ???? ????? ???? ???? ?? ???? ?? ???? ???? ??? ??? ?? ??????? ???? ???? [???? ???] ?????? ?????? ??????? ??????

??? ????????? ??????? ?? ????? ?????????? ???????? ?? ??? ???????. I have been useing this application for two yrs and It really is genuinely excellent and handy but there is a blunder,the error is usually that After i head to sixth grade and open a pdf the lessons are different compared to textbooks I hope you resolve it. ?????? ?????? ?????? ??