They...
They don't do gymnastics
They do gymnastics
We....
We don't go to school
We go to school
I...
I don't play basketball.
I play basketball.
I...
I have a music lesson
I don't have a music lesson
They...
They don't play basketball.
They play basketball.
I...
I go to school
I don't go to school
They...
They don't do gymnastics
They do gymnastics
I...
I don't have a music lesson
I have a music lesson