1. We should walk.
2. We shouldn’t always use cars, we should use public buses.
3. We should share cars or we should use economical cars.
4. We should reuse envelopes.
5. We shouldn’t throw things everywhere. We should use recycle bins for glass, paper or plastic.
6. We shouldn’t throw the empty batteries in a normal bin. We should use special bins for batteries.
7. We should use low energy bulbs.
8. We should use both sides of writing paper.
9. We should turn off the lights.
1 .We should turn off the taps.
1 We should have shorter showers.
1 We should use carrier bags, not plastic.