20 баллов помогите по английскому языку упражнение 2

1. Several forms of pollution threaten the environment.2. The local green group will clean up the beach next Saturday.3. In ancient times, people worshiped a variety of gods.4. We need to do more to save the environment.5. Greenpeace is doing a lot to protect whales.6. Archaeologists are not sure if the monument for survives long.7. Conservationists are doing everything they can preserve the temple.8. A number of animal species face extinction unless we do something.