Ответ:

Объяснение:

1. We are running out of freshwater, aren't we?

2. The world has got warmer, hasn't it?

3. We have to create less rubbish, don't we?

4. The oil killed many fish, didn't it?

5. It's wrong to drop litter on the street, isn't it?

6. You didn't take those cans to the recycling bank, did we?