When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.
-----Have you seen___ pen? I left it here this morning. -----Is it __black one? I found it in the corner.
Mother told Jim to watch the milk until it boiled and then _____ off the gas.
They weren't a particularly good team, but they refused to give in and _____ defeat.
He was in great need of money, so he _____ $5, 000 for his car.
_____ when one loses freedom does one know its value.