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

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