Переведите все предложения:
Present Indefinite
I WORK much at my paper.
I don't WORK much at my paper.
Do you WORK much at your paper?

Past Indefinite
I worked much at my paper.
I didn't WORK much at my paper.
Did you work much at your paper?

Future Indefinite
I shall (или will) work much at my paper.
I shan't (или won't) work much at my paper.
Shall (или Will) you work much at your paper?