Tricky words

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Across
  1. 2. "Are you ____ to the football?"
  2. 4. worth nothing
  3. 6. "Do you ______ his excuse?"
  4. 7. keep apart
  5. 8. it lives in the ground
Down
  1. 1. sentences are made of these
  2. 3. you must do it
  3. 5. you need this for good dancing
  4. 8. you do this in the vineyard