Ответ:

1. Cooks

2. Will cook

3. Is cooking

4. Cooked

5. Don’t eat

6. Am not eating

7. Will not (won’t) eat

8. I didn’t eat

9. Spent

10. Didn’t spend

11. Did he spend…?

12. Where did he spend…?

13. Helped

14. Didn’t help

15. Did she help…?