2 he started going to school in 2000
a he has been a student since 2000
b he has been a student for 2000
c he has been a student in 2000
d he is s student since 2000
2 he started going to school in 2000
a he has been a student since 2000
b he has been a student for 2000
c he has been a student in 2000
d he is s student since 2000
2 he started going to school in 2000
a he has been a student since 2000
b he has been a student for 2000
c he has been a student in 2000
d he is s student since 2000