Решение:
Для выполнения задания нужно преобразовать утвердительные предложения в отрицательные, используя глагол didn't и инфинитив смыслового глагола.
- Nick didn't help his uncle in the garden.
- She didn't close her interesting book.
- We didn't play snowballs near our school.
- They didn't watch animals at the zoo.
- Pavel didn't live in London.
- Ann didn't like ice cream very much.
- I didn't invite my friends to my birthday party.
- Tom didn't open the door.
Ответ: 1. didn't help; 2. didn't close; 3. didn't play; 4. didn't watch; 5. didn't live; 6. didn't like; 7. didn't invite; 8. didn't open.