1.He hasn't been learning Italian for 3 yrs.He has been learning it for 4 yrs
2.He hasn't been at our college football tea for 4 yrs .He has been 2 yrs
3.He hasn't been playing the electric guitar at 13.He has been playng at 15.
4.He hasn't been driveing from March.He has been driving from Octomber.
5.He hasn't been working at Tony's pizza place from Sebtembre.He has been working from July
