№1.
Fall into the river/the sea
Fall out of bed/sofa
Fall down the stars/a hill
Fall through the ice/a window
Fall of your bike/your skateboard
№2.
2) out of
3) of
4) at
5) down
6) into
7) through
№1.
Fall into the river/the sea
Fall out of bed/sofa
Fall down the stars/a hill
Fall through the ice/a window
Fall of your bike/your skateboard
№2.
2) out of
3) of
4) at
5) down
6) into
7) through