When I came into the classroom, the turtle ....
was eating cabbage.
When I came into the classroom, David and Mark ....
were jumping.
When I came into the classroom, Bob ....
was clearing the whiteboard.
When I came into the classroom, the teacher ....
was checking our homeworks.
When I came into the classroom, the projector ....
was displaying film on the screen.
When I came into the classroom, some students ....
were running around the classroom.
When I came into the classroom, my friends ....
were eating sandwiches.
When I came into the classroom, Tina ....
was sleeping.
When I came into the classroom, the teacher ....
was writing on a whiteboard.
When I came into the classroom, the sun ....
was shining.
When I came into the classroom, John was .....
reading a book at his desk.
When I came into the classroom, Maria ....
was listening to music with headphones.
When I came into the classroom, Sarah was .....
writing on the whiteboard.
When I came into the classroom, some students ....
were singing.
When I came into the classroom, the students were ....
talking to each other.