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  1. After  (graduate) from the university he worked in the Far North.
  2. He remembered  (add) some water to the mixture.

  3. At the meeting they discussed different ways of  (improve) their work.

  4. There are different ways of  (obtain) the substance.

  5. What is the reason of his  (leave) the city so suddenly?
  6. New possibilities of  (apply) atomic energy open up.

  7. (Split) the atom is a difficult task.

  8. After  (close) the circuit we measured the resistance.
  9. (travel) all around the world broadens your mind.
  10. They spoke about  (move) to another city.