Part 5

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Across
  1. 3. a close friend or companion
  2. 5. collapsed
  3. 6. not asked for/ requested
  4. 8. to do something in a very determined, persistent or tenaciously stubborn way.
Down
  1. 1. so lacking in originality as to be obvious and boring
  2. 2. something dangerous; unsafe
  3. 4. not likely to cause offence or disagreement and somewhat dull
  4. 7. (figurative) a place or situation where high levels of activity are generated