lesson4

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Across
  1. 2. in the centre
  2. 6. pay attention to
  3. 8. people who taking bus/train...
  4. 9. 在...间≥3
  5. 10. ∞careful
Down
  1. 1. v pollute
  2. 3. ∞loser
  3. 4. ∞disadvantage
  4. 5. capital is Paris
  5. 7. 疯狂的
  6. 11. 空的
  7. 12. adj safe