Greetings and classroom commands

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Across
  1. 1. sit down
  2. 3. stand up
  3. 7. I don't understand
  4. 8. thank you
  5. 9. pencil
  6. 10. good morning
Down
  1. 1. silent
  2. 2. I have a question
  3. 4. I don't understand
  4. 5. what's up
  5. 6. you are welcome