A vase of flowers is on the ____ desk.
teacher
teachers
teacher's
teacher'
The window is ____ the big door.
behind
under
next to
A girl ______ her book now.
reads
is reading
reading
There is a blackboard and a clock _____ the wall.
at
on
behind
in
A boy and three girls are _____ the classroom.
in front of
in
on