потом мы делали упражнения на произ

потом мы делали упражнения на произношение и у меня были проблемы я не слышу разницы и сама не могу произнести звуки по разному

Results (English) 1:

then we were doing exercises on pronunciation and I had a problem I hear no difference and she can't pronounce the sounds differently

Results (English) 2:

Then we did the exercises on pronunciation and I had a problem I can not hear the difference, and she can not pronounce sounds differently

Results (English) 3:

Then we have done this exercise in the pronunciation and I have had problems i do not hear the difference and I cannot say sounds in different ways