1. If we recycle more, we (help) .. ………………………… the earth. 2. Factories (not dump)… ………………. waste into the rivers if the government fines them heavy. 3. If people travel to work by bus, there (be) ………………….…….. fewer cars fumes. 4. We will save thousands of trees if we (not waste)……………………….. paper. 5. If we use waste water carefully, more people (have)…………...…… fresh water. 6. If you (be)……………..…. the president, what ………………..you (do)……………….? 7. They get sick so often. If they (exercise)…………… more, they (be)……….. healthier. 8. If I (have)……………… one million US dollars, I (build)…………….. more parks in our city. 9. Ngoc’s mother is unhappy. If Ngoc (tidy)……………..……..……….. her room every day, her mother (not be)……………………… so upset. 10. There isn’t a garden at our house. If there (be)……….., we (grow)……………….…..vegetables.

1.If we recycle more, we will help the earth.

2. Factoties won't dump waste into the rivers if the government fines them heavy.

3. If people travel to work by bus, there will be fewer cars fumes.

4. We will save thousands of trees if we don't waste paper.

5. If we use waste water carefully, more peope will have fresh water.

6. If you were the president, what would you do?

7. They get sick so often. If they exercise more, they will be healthier.

8. If I had one million US dolars, I would buy more parks in our city.

9. Ngoc’s mother is unhappy. If Ngoc tidied her room every day, her mother wouldn't be so upset.

10. there isn’t a garden at our house. If there were, we would grow vegetables.