High school hints

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Across
  1. 5. If you describe someone as sharp, you are praising them because they are quick to notice, hear, understand, or react to things
  2. 8. you try hard to do it, even though other people or things may be making it difficult for you to succeed
  3. 10. A person or animal has the ability to think, understand, and learn things quickly and well
  4. 11. basic information or training that is given to people starting a new job, school, or course
Down
  1. 1. arrange to receive something, typically a publication, regularly by paying in advance
  2. 2. someone, especially an official, tries to find out what happened or what is the truth
  3. 3. different from one another; of different kinds or sorts
  4. 4. an arrangement in which people from two different countries visit each other's country, to strengthen links between them
  5. 6. someone does work without being paid for it, because they want to do it
  6. 7. you are anxious or afraid, often because of something that has just happened or that you think may happen
  7. 9. a discussion about a subject on which people have different views