问题补充:
What shall we use for power when all the oil in the world has ?
A. given out
B. put out
C. held up
D. used up
答案:
(答案→)A. given out
B. put out
C. held up
D. used up
解析:此题考查短语动词的用法。give out“用完,用光”;put out “扑灭(大火)”;hold up “阻碍”;use up “用完”。若选D项,则要用被动形式。