They waited for _______ seemed to be a long time, hoping that rescue would come.
| A．it | B．which | C．what | D．that |
-----Have you seen___ pen? I left it here this morning.
-----Is it __black one? I found it in the corner.
| A．a, the | B．the, the | C．a, a | D．the, a |
Mother told Jim to watch the milk until it boiled and then _____ off the gas.
| A．turn | B．turning | C．turned | D．having turned |
They weren't a particularly good team, but they refused to give in and _____ defeat.
| A．accept | B．accepted | C．accepting | D．to have accepted |
He was in great need of money, so he _____ $5, 000 for his car.
| A．paid | B．took | C．cost | D．spent |
_____ when one loses freedom does one know its value.
| A．Just | B．Only | C．Even | D．Ever |