For vs. Since Practice 2
For
Since
Duration of time
It answers the question "How long?"
Starting point
It answers the question "When did it start?"
i.e.
for
2 hours
i.e.
for
one month
i.e.
for
five minutes
i.e.
since
last month
i.e.
since
5 years ago
i.e.
since
Christmas
Choose between
for
and
since
for each of the following questions.