Complete the crossword

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Across
  1. 5. Crossing place marked with white lines (the long vertical entry running through the whole grid, intersecting every across answer)
  2. 9. Something we apply on cuts to prevent infection
Down
  1. 1. A walking place on the side of the road
  2. 2. Harm caused by swallowing harmful substances
  3. 3. Quick help given before a doctor arrives
  4. 4. Green light in the traffic light means
  5. 6. Injuries caused by fire or hot objects
  6. 7. We may slip on a ___ floor
  7. 8. Yellow light in the traffic light means