Ответ:
2. Does Jessica learn English? – No, she doesn't
3. Do we do (вообще в таких случаях употребляют глагол "have") PE on Tuesdays? – No, we doesn't
4. Do they study Maths at the weekend? – Yes, they do.
5. Do I (можно написать "you"), need a new Geography book? – No, I/you don't.
6. Does he teach History? – Yes, he does.