1. How long has he been studying English?
He has been studying English since 2002
2. How long has she been designing websites?
She has been designing websites for a long time
3. How long have you been living in Russia?
I have been living in Russia since I was born.
4. How long have they been being friends?
They have been being friends for three years
5. How long has he been working in a shop?
He has been working in a shop since he left school.