Where is she going?
through
Where is the snake going?
through
Where is she walking?
over
Where is the bird going?
through
Where is it going?
under
Where is the ball rolling?
across / over
Where is the bird going?
under
Where is over going?
across / over
Where is the snake going?
under
Where is the snake going?
across
Where is the bird flying?
over
Where is the snowman jumping?
over