It took a long time for the effective use of natural gas_________.A.to be madeB.to makeC.being madeD

题目简介

It took a long time for the effective use of natural gas_________.A.to be madeB.to makeC.being madeD

题目详情


It took a long time for the effective use of natural gas_________.
A.to be madeB.to makeC.being madeD.making
题型:单选题难度:偏易来源:不详

答案

A

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