Ex, 1, p. 59

1. We should change people’s attitudes towards the environment.

2. We should use more solar energy.

3. We shouldn't put waste into the seas and rivers.

4. We shouldn’t use products which damage the ozone layer.

5. We must clean the air.

6. We must save more energy and water.

7. We mustn’t treat food with chemicals.

8. We can find ways of preventing oil spills.

9. We can protect animals in danger.

10.  We could ban cars which use leaded petrol.

11.  We ought to stop cigarette advertising.

12. We ought to make tough laws against litter.

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