Question

Нада поставить отрицательно предложение и проставить да или нет Tom and Ted are buying vegetables in the shop?

Answer 1

Tom and Ted aren't buying vegetables in the shop.
Если нужно вопросительное предложение с краткими ответами, то:
Aren't Tom and Ted buying vegetables in the shop?
Yes, they are. / No, they aren't.

Answer 2

Отрицательное предложение:

Tom and Ted are not buying vegetables in the shop.

Вопрос:

Are Tom and Ted buying vegetables in the shop? (Нет)