One-word Substitution

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Across
  1. 2. I have my _______ exam tomorrow.
  2. 4. He set out to learn the theory and data of ___________.
  3. 6. With total of 90, Indians top list of the US unicorns ________ founders.
  4. 7. I saw a _____ of ducks swimming in the pond.
  5. 9. I believe every sibling uses their sibling as a ________ and gets them grounded.
  6. 10. My sister wants to meet a _____________ as she wants to be a national level dancer. She wants to make India proud.
Down
  1. 1. Saudi Arabia is governed by a ________.
  2. 3. I don't like the fact that all my friends are _______.
  3. 5. The President arrived in his _______ at the India Gate on the occasion of Republic Day.
  4. 8. Josh is an _______.