Before
there
____________________
alarm
clocks
,
how
did
people
____________________
to
wake
up
?
Well
,
many
people
____________________
use
to
worry
about
time
so
much
because
they
worked
on
the
land
.
However
,
as
people
started
to
work
in
factories
,
being
on
time
became
more
important
.
Because
many
workers
____________________
to
be
late
getting
to
work
,
factory
owners
employed
a
"
knocker
-
upper
"
.
This
person
used
a
long
stick
to
wake
people
up
by
knocking
on
their
bedroom
windows
.
Ths
seems
funny
now
,
but
back
in
those
days
there
____________________
any
other
way
!
