All the broken pieces

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Across
  1. 2. an athletic instructor
  2. 3. band with a hit song in the 70s called stayin alive
  3. 4. fragments
  4. 6. opposite of whole
  5. 7. a instution for learning
  6. 8. a small rodent
Down
  1. 1. a group of relatives
  2. 3. a sport with bases
  3. 5. an Asian country that starts with a v