I have been studying in school for a long time
I have been living (где ты живешь) since (с какого года)
I have been helping my mother since I was six
I have been studying at school all day
I have been washing the dishes all evening
I have been meeting my friend for a while
I have been speaking to him every day
I have been walking in a park every Sunday since I was 4
I have been doing my homework since 1 class
I have been speaking about you all day