Turkish lesson Vowel harmony

  Wow, there are some mistakes. In Turkish, we never say "Türksünüz mü?" we say "Türk müsünüz?" and for the last sentense, it should be "İyi misin?" and it is not "Arablar" it is "Arabalar" :D

Turkish is definitely not his first language!

But, isn't the I a short sounding i? mI instead of mu?