Special things

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Across
  1. 3. Group fronted by cops ultimately. Practice...
  2. 6. Fancy band girl runs ahead of Shanghai attraction
  3. 7. Storm still ruins a strong portico and tells of another storm
  4. 11. Top station times, before the system and argument
  5. 13. Welsh holiday, special coat behind lost twit. Dance solo.
  6. 16. The ceiling cracked with Lawrence's mixer
  7. 17. Smash! Clash! Neckties on the instrument! Confounding Yankees!
Down
  1. 1. December time, good! One cooks scarce, tricks harm
  2. 2. one who pays to be conveyed aloud with heart to quicken heartbeats
  3. 4. Ware used to split; fuel with the muddled or petty!
  4. 5. Ruthenia, as we say, put up with good weave: first choice! For the chair...
  5. 8. stirs up a stream with the French
  6. 9. Snug going up a pole, we listen to find our way.
  7. 10. Get a man who wanders, it's the best to see an open road ahead.
  8. 12. First pie gone awry and stormlike contemporary
  9. 14. The best way to cross; say maybe greens or builders, and the heads of Tories. Rebel any new nonsense, yeah!
  10. 15. Hit by shark's! Pray, I hear everything after wick and coal, but not stuff for burning.