题目内容

It will take a long time for the effective use of natural resources _________.
A．to be madeB．to makeC．being madeD．making
A

试题分析：考查不定式的用法：句意：实现天然气的有效使用花了很长时间。原句可改为：To make the effective use of natural gas took a long time.这里使用的是It will take +一段时间+to do sth，不定式是这句话的主语，it是形式主语，而且the effective use of natural resources和make是被动关系，选A。
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