Cover of the textbook On Screen B1+ - Student's Book

The key answer of exercise 4

The key to exercise solutions in chapter Progress Check 5 for the textbook On Screen B1+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing

Question

Fill in.

Answer

  1. habitats
  2. power
  3. fossil
  4. volunteers
  5. packaging
  6. species
  7. energy
  8. solar
  9. smog
  10. campaign

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