My crossword puzzle

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Across
  1. 4. I play with these.
  2. 6. A place of worship.
  3. 7. under your skin.
  4. 8. helps you along your journey.
Down
  1. 1. total failure.
  2. 2. Man,s best friend .
  3. 3. place of learning.
  4. 5. mum's dad.
  5. 7. only mammal that can fly.