Fill it up

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Across
  1. 2. One can write using me
  2. 3. I stay high on your head.you can see me completely only once in the month.
  3. 5. people use most of the times before game to decide choice.
  4. 6. winner who comes with suffix ion will be called like this
  5. 7. i can protect head, wear me on head
  6. 8. people use me whether agree with something
  7. 9. I am number who will be called as boundary in cricket
Down
  1. 1. when you see me you should use me or else i may go forever
  2. 4. guides his students