For or Since

For is used for general periods of time - 2 hours, three days, one month.
Sinceis used for a specific time - 1998, January, last week, one month ago.

Click the answer button to see the correct answer.

I have studied computers......

  1. seven weeks.
  2. a long time.
  3. two days.
  4. I was 10 years old.
  5. a year ago.
  6. a year.
  7. ten days.
  8. 2004.
  9. I came to Tokyo.
  10. 4 hours a day for two years.
  11. three years.
  12. June.
  13. the beginning of the month.
  14. about 45 minutes.
  15. I was in elementary school.