Who broke the glass must ______ it, it is one of our library rules.

He works in a factory now, but he on a farm for 20 years

______ he has been so rude to us, I feel like we have to punish him or he won’t respect us

________ big river it is!— Yes. I am afraid I can’t swim ________ it.

________the difference between the two research findings will be one of the worst mistakes you make.