Yes

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Across
  1. 2. Work done by a student
  2. 3. something important
  3. 4. to make changes
  4. 5. to repeat
  5. 6. To remove impurities
  6. 7. Multiple subjects
  7. 8. to form an idea
Down
  1. 1. to follow something
  2. 2. To work with others
  3. 7. production of a substance