It took a long time for the human responsibility ______ on environment issues.
A.to be builtB.to buildC.being builtD.building
求详解
人气：166 ℃ 时间：2019-09-29 03:28:48
解答
A
此句后面是不定式的复合结构【for sb to do sth】
由于the human responsibility 和不定式build 为被动关系,故用不定式的被动式
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