Before petroleum______,another way has to be found.A.takes outB.runs outC.makes outD.works out

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Before petroleum______,another way has to be found.A.takes outB.runs outC.makes outD.works out
Before petroleum______,another way has to be found.
A.takes out
B.runs out
C.makes out
D.works out

Before petroleum______,another way has to be found.A.takes outB.runs outC.makes outD.works out
B.runs out
用完；耗尽

before Before Before long before和before long before 和before long before和before just before ever before comes before Prose before before是什么意思 missing ; before long before,before long,soon before,before soon的区别 before是什么意思 before ciass before troubles before用法 before用法