The document is a mind puzzle that provides idioms using different words to complete the phrase "THE MIND PUZZLE". It gives 10 examples of common idioms such as "speaks her mind", "bear in mind", "don't mind", "a load off my mind", "out of your mind", "do you have in mind", "has a mind of her own", "springs to your mind", "slipped my mind", and "never crossed my mind". The puzzle tests the reader's knowledge of common English idioms.