Write should or shouldn`t. (3б.)
1. We __________burn trees.
2. We ____________ walk or ride a bike to
school.
3. We _____________leave the tap running when we're brushing the teeth.
4. We __________ turn off the lights and the computer when we leave the room.
5. We _____________ recycle waste paper, bottles and cans.
6. We_________ use aerosols.