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.

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.

VI. Choose the best answer to complete the sentences.
1. The river water is severely polluted, mostly________ the dumping of raw sewage.
A. due to B. lead to C. because D. so
2. Sudden changes in water temperature can ________ mass killings of fish, plants, or
amphibians.
A. come up B. result in C. dump into D. thank to
3. Water pollution________ the death of all forms of life in the water bodies.
A. occurs B. results of C. creates D. leads to
4. ________ plastic takes so long to break down, it pollutes the land and ocean.
A. Because B. Due to C. Even if D. Although
5. Many flights were cancelled ________ the smoke from forest fires.
A. so B. because C. because of D. result in

6. ________the garbage dump smells terrible, no one lives around there.
A. Because of B. As C. As a result of D. Even though
7. ________the grain consumption is rising, forests will be cut to provide more room for
planting crops.
A. since B. Although C. unless D. Due to
8. Grace didn’t love nature, ________ she wasn’t happy when her group went camping in a
jungle.
A. but B. and C. because D. so
9. Thousands of fish were killed ________ a discharge of poisonous Chemicals from a
nearby factory.
A. because B. lead to C. result in D. as a result of
10. ________the fog, there were no take-oils from the airport yesterday.
A. Since B. Because C. Owing to D. Thanks to