Super heroes

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Across
  1. 3. hope
  2. 5. fantastic
  3. 6. shelve of chemicals
  4. 7. must be worthy
  5. 9. muscles
  6. 10. of steel
Down
  1. 1. missile strike
  2. 2. worst nightmare
  3. 3. unexpected bite
  4. 4. bullet
  5. 8. million air