1
.
William
____________________
____________________
(
do
)
his
homework
when
I
arrived
.
2
.
At
three
thirty
I
____________________
____________________
(
come
)
home
on
the
bus
.
3
.
The
mountain
climbers
____________________
____________________
(
rest
)
when
the
storm
began
.
4
.
We
practiced
saying
new
vocabulary
words
while
we
____________________
____________________
(
walk
)
.
5
.
You
and
your
friends
____________________
____________________
(
sit
)
in
the
coffee
shop
yesterday
morning
.
