-tract crossword puzzle

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Across
  1. 4. A____helps us doing math more easier.
  2. 7. When my turtle got scared, it____its head into his shell
  3. 8. We can not be____by computer games.
  4. 10. A test can be____to us if will didn't review.
  5. 11. Scientist is trying to____people's live.
  6. 12. My sister likes to make____art works.
  7. 14. My sister often____ when I'm doing my work.
Down
  1. 1. Playing games while learning, you might____your attention!
  2. 2. In the beginning, a teacher will teach us____.
  3. 3. When you go to the hospital, a nurse might____your bloods.
  4. 5. When a people buy a house, they have to sign their name on a____.
  5. 6. You can't regret the thing you write, it's a____ contract!
  6. 9. My mom is very____.
  7. 13. 3____by 2 is equal to 1.