Безотлагательно ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!! Безотлагательно

1) Peter subtracts at the lessons of Maths. (Present Simple)
Peter doesn't subtract at the lessons of Maths.
Who does subtract at the lessons of Maths?
2) Yesterday our teacher explained the new rule. (Past Simple)
Yesterday our teacher didn't explain the new rule.
When didn't explain our teacher the new rule?
3) My friend will have the sports and History tomorrow. (Future Simple)
My friend won't have the sports and History tomorrow.
What subjects won't my friend have tomorrow?
4) My classmates are writing the composition now. (Present Continuous)
My classmates aren't writing the composition now.
What are my classmates doing now?