In the past

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Across
  1. 2. we use this in math class
  2. 4. we write with this
  3. 6. we use this to take pictures
  4. 7. we use this to travel
  5. 8. we use this to call and surf the internet
  6. 9. they used these to see, when it was dark
Down
  1. 1. they used this to travel with a carriage
  2. 3. they used to use this for light
  3. 5. they used to travel by these in the old times