Use the word given in capitals to form a word that fits in the space.

Решение:

• 1. All people are responsible for the environment. To help nature it is advisable to reduce air pollution by cars. Their fumes are poisonous for people and animals. Acid rain is not harmful either. All national governments should unite to create a healthy planet.

Ответ: 1. responsible, 2. advisable, 3. pollution, 4. poisonous, 5. harmful, 6. national, 7. healthy.