Fill in opposites of quantifying expressions

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Across
  1. 3. a lot more frequently than younger people do.
  2. 7. Moreover, it appears that a substantial number of senior citizens use email...
  3. 8. There have been a small number of studies investigating the impact of email on interpersonal communications.
Down
  1. 1. in excess of 50 emails daily.
  2. 2. more and more people send...
  3. 4. large-scale but they suggest some interesting trends in patterns of email use.
  4. 5. From one of the older studies is seems that...
  5. 6. None of the studies has been...