conditionals, 0,1,2

What would you do if the lift (get)…… stuck between two floors?

If you paint the walls white the room … (be) much brighter.

I'd climb over the wall if there …(be not) so much broken glass on t of it.

He won't work (chyba że mu dużo zapłacą)………………………….

Unless he (sell) …… more he won't earn much