I
Sara
Doesn't wake up at 8 a.m
Don't wake up at 8 a.m.
Sam
We
Doesn't have breakfast at 6 a.m.
Don't have breakfast at 9 a.m.
She
They
Don't brush their teeth.
Doesn't brush her teeth.
You
Mary
Don't go to the gym at 6 a.m.
Doesn't go to the gym at 7 a.m.
The dog
We
Don't walk.
Doesn't walk.