Ребята, помогите пожалуйста. В каждом предложении есть ошибка и её надо исправить.

1. He has to

2. He will have to

3. He had to

4. We haven't to

5. We have got much butter

6. He will have to

7. writes > write

8. must > had to т.к у must нет форм