16

12345678910111213141516171819202122
Across
  1. 10. such plan, piece of equipment, etc uses new and clever ideas
  2. 11. an examination you take for practice before an important examination
  3. 13. taking a very long time to understand or realise something
  4. 15. suddenly have an idea; discover something by chance
  5. 17. study something very hard, especially for an examination (without 'on')
  6. 18. to spend time considering a possible future action, or to consider one particular thing for a long time in a serious and quiet way
  7. 19. a question, often expressing doubt about something or looking for an answer from an authority
  8. 20. if something ***, you suddenly think it, especially in relation to a particular subiect tha you are considering
  9. 22. solve a confusing or complicated problem by thinking carefully about it
Down
  1. 1. not completely good, safe or honest; not sure about the truth or quality of something, or whether you should do something
  2. 2. the process of making a guess when you do not know all the facts
  3. 3. putting a lot of effort into your work (adj)
  4. 4. an *** remark is one that you make without thinking carefully and without anv preparation (with dashes)
  5. 5. see, hear or understand someone or something with difficulty; suggest, imply
  6. 6. not knowing something that you should know or need to know
  7. 7. learn the truth about something by considering all the separate bits of information you have
  8. 8. crazy
  9. 9. accept something and try to deal with it
  10. 12. if you say *** something is a fact you think it must be true because of the information you have
  11. 14. argue or worry about very small details or differences that are not important
  12. 16. to take someone else's work, ideas or words, and use them as if they were your own
  13. 21. invent or imagine something, especially an excuse