1. __________ yesterday

    1.   for
    2.   since

  2. __________ three days

    1.   for
    2.   since

  3. __________ a long time

    1.   for
    2.   since

  4. __________ I left school

    1.   for
    2.   since

  5. __________ 50 years

    1.   for
    2.   since

  6. __________ ever

    1.   for
    2.   since

  7. __________ Man first landed on the Moon

    1.   for
    2.   since

  8. __________ a few moments

    1.   for
    2.   since

  9. __________ last Summer

    1.   for
    2.   since

  10. __________ five hours

    1.   for
    2.   since