1.the factory kept -- waste water -- the river,AS a result,l

1.the factory kept __ waste water __ the river,AS a result,lots of fish died
2.why not __ the light?it is so dark in the room
3.would you please __ the bananas for me?the knife is on the desk
4.the waiter __ some ice __ the beer
5.would you please not __ the ingredients?
turn on,mix together,cut up,add……to,pour……into