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Writing 11-Unit 10

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    Fill in the blank
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  • 1. Dinosaurs became _________millions of years ago.
    extinct
  •  10
  • 2.She tried to _______protect herself from the wind.
    protect
  •  10
  • 3. This species of bird is ________in numbers every year.
    decreasing
  •  10
  • 4.The chemical_______pollutants from cars and factories make the air, water and soil dangerously dirty.
    pollutants
  •  10
  • 5. The blue whale is a(n) ________species
    endangered
  •  10
  • 6. Because of the __________ of human beings, many animals have become extinct.
    interference
  •  10