B2.3 Unit 1

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Across
  1. 6. strange, not known, or not understood
  2. 7. to disappear suddenly
  3. 9. to suddenly go somewhere and become impossible to find
  4. 11. things that cannot be explained by our knowledge of science or nature
  5. 12. something you cannot understand at all
  6. 13. to make certain that something is correct
Down
  1. 1. strange or unusual
  2. 2. watching carefully and always ready to notice anything dangerous or illegal
  3. 3. strange, often in an unpleasant way
  4. 4. something that exists or happens, usually something unusual
  5. 5. really what it seems to be
  6. 8. to show that something is untrue
  7. 10. seeming likely to be true, or able to be believed