Mono Crossword puzzle

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Across
  1. 2. speaking or writing in one language
  2. 5. one syllable
  3. 6. speech in which every word has one tone of voice
  4. 7. control of a product or service by one company
  5. 8. speech given by one person
Down
  1. 1. having one color
  2. 2. track for subway or train cars that has one rail
  3. 3. eyeglass for one eye
  4. 4. made out of one large block or piece of stone
  5. 5. fear of being the only one