U1~U8

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Across
  1. 3. a few people know
  2. 5. nothing
  3. 8. keep in touch with each other anytime
  4. 9. many cars
Down
  1. 1. 1,2,3...
  2. 2. leave over
  3. 4. difficult
  4. 6. come in
  5. 7. left over
  6. 10. match