Random puzzle

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Across
  1. 2. teacher's friend
  2. 5. teacher's phone
  3. 7. a beautiful planet
  4. 8. three students in 8th
  5. 11. a teacher and student's last name
  6. 13. today's weather
  7. 15. classroom manga
  8. 17. permission
Down
  1. 1. favorite number
  2. 3. rival alien from anime
  3. 4. today
  4. 6. WB57 topic
  5. 9. best cookie
  6. 10. four students in 8th
  7. 12. teacher's pc
  8. 14. 9000
  9. 16. best team