A
.
We
use
____________________
____________________
to
talk
about
completed
actions
in
the
past
.
B
.
We
use
____________________
____________________
to
talk
about
activities
in
progress
at
a
particular
point
in
the
past
.
We
often
link
two
activities
with
while
.
C
.
We
use
____________________
____________________
to
talk
about
a
longer
activity
interrupted
by
a
shorter
action
.
We
use
____________________
____________________
for
the
shorter
action
.
