问题
选择题
---All the oil in the world will have __________ some day.
---Yeah. What shall we use for power at that time?
A．given away
B．put away
C．run out
D．set out
答案
答案：C
四个选项分别表示泄露、储存、用完和出发，根据题意选C，世界上的石油有一天会用完。
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