Because of the Russian gas limit to Europe, attempts _______ to use botanical fuel as a source of po

题目简介

Because of the Russian gas limit to Europe, attempts _______ to use botanical fuel as a source of po

题目详情


Because of the Russian gas limit to Europe, attempts _______ to use botanical fuel as a source of power.
A.have madeB.having madeC.are being madeD.will be making
题型:单选题难度:偏易来源:不详

答案

C

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