If we (recycle) ____ more, we (help) ____ the Earth. Factories (not dump) ____ waste into rivers if the government (fine) ____ them heavily. If people (travel) ____ to work by bus, there (be) ____ fewer car fumes. We (save) ____ thousands of trees if we (not waste) ____ paper. If we (use) ____ water carefully, more people (have) ____ fresh water. If teachers (teach) ____ environmental issues at school, students (be) ____ more aware of protecting the environment. People (get) ____ more diseases if the water (be) ____ contaminated.

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