Exercise

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Across
  1. 3. to politely refuse an offer or invitation
  2. 6. to refuse to accept someone or something completely
  3. 7. a stupid or careless mistake
  4. 8. a mistake especially in calculations, computers or official work
Down
  1. 1. to say that something is not true; to refuse to give something
  2. 2. something you do or think that is not correct
  3. 4. something wrong with a person or thing; responsibility for a mistake
  4. 5. to say firmly that you will not do or accept something