Surprise!

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Across
  1. 2. a celebration with cake and presents
  2. 4. moving through the air with wings, verb
  3. 6. together
  4. 7. caste, elegance, periods in school
Down
  1. 1. having a smooth, leveled surface
  2. 2. corporation, place of work
  3. 3. the feeling of joy
  4. 5. opposite of telling the truth
  5. 8. pronounced "r", verb