I
____________________
at
a
school
.
They
____________________
at
a
restaurant
.
I
____________________
at
a
hospital
.
They
____________________
actors
.
He
____________________
a
musician
.
They
____________________
firefighters
.
He
____________________
a
student
.
He
____________________
a
scientist
.
She
____________________
a
ballet
dancer
.
I
____________________
in
a
lab
.
She
____________________
in
a
lab
.
They
____________________
in
a
lab
.
I
____________________
in
a
restaurant
.
He
____________________
in
a
lab
.
They
____________________
in
a
lab
.