_____________ worries me the way he keeps changing his mind.
| A．This | B．That | C．What | D．It |
All his free time is ______ by volunteer work, but he feels it meaningful.
| A．put up | B．given up |
| C．picked up | D．taken up |
Bill Gates is so _____ that he has given away most of his money to the poor.
| A．brave | B．smart |
| C．generous | D．skillful |
They are now holding talks in a friendly _________ in the meeting room.
| A．atmosphere | B．state |
| C．situation | D．position |
Although knocked down by a car, he managed to _______ to his feet.
| A．stand | B．move | C．rise | D．struggle |
John seems puzzled about ________ the question meant.
| A．how | B．why | C．what | D．which |