Exercise on »since« and »for«

- since - if the starting point is given (two o'clock, last Friday, 1998)
- for - if the period of time is given (twenty minutes, two days, one year)

Decide whether to use »since« or »for«.

  1. I have been waiting 4 o'clock.
  2. Sue has only been waiting 20 minutes.
  3. Tim and Tina have been learning English six years.
  4. Fred and Frida have been learning French 1998.
  5. Joe and Josephine have been going out together Valentine's Day.
  6. I haven't been on holiday last July.
  7. Mary has been saving her money many years.
  8. I haven't eaten anything breakfast.
  9. You have been watching TV hours.
  10. We have been living here 2 months.