21st Century Unit 1

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Across
  1. 3. mainly
  2. 6. to show the meaning or the truth of something more clearly, especially by giving example
  3. 8. to change something completely
  4. 9. taking photos of
Down
  1. 1. the period just before it becomes completely dark in the evening
  2. 2. to make something stronger
  3. 4. a subject or problem that people are thinking and talking about
  4. 5. a period of ten years
  5. 7. happening all the time