sport crossword!!!

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Across
  1. 4. it is a sport that discovered by Britain,now it is China's national sport
  2. 5. the most popular sport in the world!
  3. 6. it used to training muscle which is common
  4. 7. i believe that is the first sport you contact
Down
  1. 1. a popular sport in America
  2. 2. a important organic chemical constituents for repair muscles
  3. 3. sport