4 Fill in the question tags. 1 We are running out of freshwater, _______?

1. We are running out of freshwater, are we? 2. The world has got warmer, hasn't it? 3. We have to create less rubbish, don't we? 4. Rubbish is usually recycled, isn't it? 5. It's wrong to drop litter on the street, is it? 6. You didn't take those cans to the recycling bank, did you?