Tom, clean up the broken glass _________ someone walks on it.
Faced with the hard financial ____________, all the countries in the world should learn to cooperate to get it over.
Would you take my old TV in _______ for this camera?
The research showed beyond ________ that smoking contributes to heart diseases.
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
Either you or one of your students ______ to attend the meeting that is due tomorrow.