III. Put the verbs in brackets into the correct form.

1. If we recycle more, we (help) ______________________ the Earth.

2. If the lake (not/ be)________________________ polluted, there would be a lot of fish.

3. Most people (leave) _____________________ before the volcano erupted.

4. Ten new houses (build) _____________________ in the town every year.

5. Mrs. Loan (teach) ____________________ English for more than 10 years.

Question III. 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 fines 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 the factory (continue) ________________ dumping poison into the lake, all the fish and other aquatic animals will die.

7.If we recycle more, we (help) ________________ the Earth.

8. If people (travel)________________to work by bus, there will be fewer car fumes.

9. We will save thousands of trees if we (not waste) _______________ paper.

10. Factories won’t dump waste into rivers if the government (fine) _______________ them heavily.

11. Our teacher (tell) _______________ us yesterday that he (visit) _______________ England in 1970.

12. Alan (have) _______hardly (prepare) ________for dinner when her husband (go) _______home

13. No sooner (have) ___________I (watch) _______TV than the phone (ring) __________

14. Before I (watch) __________ TV, I (do) _____________my homework.

15. After I (wash) _____________my clothes, I (sleep) _______________

VII. Complete the sentences with the verbs in brackets. Use conditional sentences type 1. 1. If the air in a City________ (get) very polluted, it can make people’s eyes burn.

2. If we dump all sorts of Chemicals into rivers, we________ (not be) able to swim in them in the future.

3. Many wildlife habitats will be destroyed if people________ (keep) polluting the environment.

4. If we all use public transport more, we________ (help) reduce air pollution.

5. If we________ (not stop) over-fishing the oceans, many species________ (become) extinct.

6. If everyone________ (recycle) paper, metal and glass, we ________ (not produce) so much rubbish.

7. We________ (have) dirty seafood if we________ (dump) rubbish into the sea.

8. If global warming________ (continue), temperatures________ (rise) even higher.

9. If light pollution________ (keep) growing, you________ (not be) able to see even the Big Dipper at night.

10. We________ (threaten) our own existence if we________ (not cut down) the waste rapidly.

VIII. Complete the sentences with the verbs in brackets. Use conditional sentences type 2.

1. If people________ (not be) so careless, Earth wouldn’t be in danger.

2. The amount of waste ________ (decrease) if people started to buy reusable packages.

3. Many fish wouldn’t die if factories________ (not dump) so many Chemicals into rivers and oceans.

4. If people stopped using cars completely, there________ (be) much less pollution.

5. If people________ (buy) more recycled paper, there wouldn’t be so much waste.

6. If we________ (not bury) Chemical waste underground, we ________ (not pollute) fresh water supplies.

7. Pollution________ (not be) such an issue if governments and common people really ________ (care).

8. What ________ (happen) if the whole world________ (be) full of pollution?

9. If people________ (pay) a little more attention to the environment, the Earth________ (be) greener.

10. If people no longer________ (pollute) the atmosphere, the air________ (soon become) clean again.

ai lam nhanh va dung to se tick

VII. Complete the sentences with the verbs in brackets. Use conditional sentences type 1. 1. If the air in a City________ (get) very polluted, it can make people’s eyes burn.

2. If we dump all sorts of Chemicals into rivers, we________ (not be) able to swim in them in the future.

3. Many wildlife habitats will be destroyed if people________ (keep) polluting the environment.

4. If we all use public transport more, we________ (help) reduce air pollution.

5. If we________ (not stop) over-fishing the oceans, many species________ (become) extinct.

6. If everyone________ (recycle) paper, metal and glass, we ________ (not produce) so much rubbish.

7. We________ (have) dirty seafood if we________ (dump) rubbish into the sea.

8. If global warming________ (continue), temperatures________ (rise) even higher.

9. If light pollution________ (keep) growing, you________ (not be) able to see even the Big Dipper at night.

10. We________ (threaten) our own existence if we________ (not cut down) the waste rapidly.

VIII. Complete the sentences with the verbs in brackets. Use conditional sentences type 2.

1. If people________ (not be) so careless, Earth wouldn’t be in danger.

2. The amount of waste ________ (decrease) if people started to buy reusable packages.

3. Many fish wouldn’t die if factories________ (not dump) so many Chemicals into rivers and oceans.

4. If people stopped using cars completely, there________ (be) much less pollution.

5. If people________ (buy) more recycled paper, there wouldn’t be so much waste.

6. If we________ (not bury) Chemical waste underground, we ________ (not pollute) fresh water supplies.

7. Pollution________ (not be) such an issue if governments and common people really ________ (care).

8. What ________ (happen) if the whole world________ (be) full of pollution?

9. If people________ (pay) a little more attention to the environment, the Earth________ (be) greener.

10. If people no longer________ (pollute) the atmosphere, the air________ (soon become) clean again.

ai lam nhanh va dung to se tick

​Write the correct form of each verb in brackets.

​1. If it (be) ______ sunny next week, we (plant ) _____ the vegetables.

​2. If we (recycle) ______ more, we (help) ____ our Earth.

​3. We (save)______ a lot of trees if we (not waste ) ______ so much paper

​4. More people (have) _____ fresh water if we only (use) ____ the water we need.

​5. If the river (not be) _____ dirty , there (be) _____ more fish.

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