IV. Put the verbs in brackets into the correct form. 1.If we (recycle) ______ more, we will help the Earth. 2. Factories (not dump) ______________waste into rivers if the government fine them heavily. 3. If people travel to work by bus, there (be) ______________fewer car fumes. 4. We (save) ________________thousands of trees if we don’t waste paper. 5. If we use water carefully, more people (have) ______________fresh water. 6.If you (be) ______________ the president, what would you do to help the environment ? 7.They get sick so often.If they exercised more, they (be) ______________ heathier. 8.If I (have) ______________ one million US dollars , I would build more parks in our city. 9.Quan’s mother is unhappy.If Quan tided his room every day, his mother (not be) ______________so upset. 10.There isn’t a garden at house .If there were, we (grow) ______________ vegetables.