问题
选择题
What shall we use for power when we _____ all the oil in the world? [ ]
A. run out
B. run out of
C. run after
D. run with
答案
答案：B
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What shall we use for power when we _____ all the oil in the world? [ ]
A. run out
B. run out of
C. run after
D. run with
答案：B