Ответ:
Tom and Ben are cleaning out the pond, aren't they ?
These kids never throw rubbish in the forest, don't they ?
You can build nesting boxes in spring, can't you ?
The eco-helpers have been planting trees for a week already, haven't they ?
The weather was not so good last week, did it ?
We read many books about ecology last month,didn't we ?
Объяснение: