Ответ:

  1. go online - E. to use the internet
  2. billion - F. a large number (1,000,000,000)
  3. common - C. usual; many people have it or do it
  4. fire - D. to make someone leave a company or job
  5. face to face - H. two people together looking at each other
  6. criminal - G. for example, a person who steals things
  7. scam - A. a plan for making money by telling lies
  8. stay connected - B. (1) have good relationships with people, (2) stay online