3.
2 I don't go to rock concerts with my classmates.
3 My parents don't sing in a choir.
4 Our music class doesn't start at half past eight .
5 We don't finish school at five o'clock.
6 I don't like punk music.
4.
1 sing sings
2 do does
3 teach teaches
4 study studies
5 listen listens
6 finish finishes