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If we go on using energy so wastefully, __________ are that our oil wells will be dried up before n...

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chances    difficulties    questions    problems  
the climate was much milder in the coastal areas of Greece  the Greeks were very careful to replant their forests after they cut them  the Greeks were not concerned about conserving their energy sources  olives were not an important resource to the Greeks  
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using wood from the olive groves in ancient Greece was a sensible solution to the fuel problem  using passive solar energy was more expensive than using wood in ancient Greece  the ancient Greeks planted new forests to replace the ones they cut down for firewood  the concept of using passive solar energy has been around since at least the fourth century B C  
Sentence 1.  Sentence 2.  Sentence 3.  Sentence 4.  
damaged  stolen  used up  discovered  
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alternative    solar    conventional    recycled  
using wood from the olive groves in ancient Greece was a sensible solution to the fuel problem  using passive solar energy was more expensive than using wood in ancient Greece  the ancient Greeks planted new forests to replace the ones they cut down for firewood  the concept of using passive solar energy has been around since at least the fourth century B C  
the climate was much milder in the coastal areas of Greece  the Greeks were very careful to replant their forests after they cut them  the Greeks were not concerned about conserving their energy sources  olives were not an important resource to the Greeks  
damaged  stolen  used up  discovered  
the climate was much milder in the coastal areas of Greece  the Greeks were very careful to replant their forests after they cut them  the Greeks were not concerned about conserving their energy sources  olives were not an important resource to the Greeks  
chances     realities      references     tensions  
using wood from the olive groves in ancient Greece was a sensible solution to the fuel problem  using passive solar energy was more expensive than using wood in ancient Greece  the ancient Greeks planted new forests to replace the ones they cut down for firewood  the concept of using passive solar energy has been around since at least the fourth century BC  
the climate was much milder in the coastal areas of Greece  the Greeks were very careful to replant their forests after they cut them  the Greeks were not concerned about conserving their energy sources  olives were not an important resource to the Greeks  
chances    opportunities    questions    problems  
damaged  stolen  used up  discovered  
chances     realities      references     tensions  
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