问题标题：
()forseveralweeks,thevillagesneededfoodandmedicinesAAshavingfloodedBAsfloodedCHavingbeenfloodedDToflood
问题描述：
()forseveralweeks,thevillagesneededfoodandmedicines
AAshavingfloodedBAsflooded
CHavingbeenfloodedDToflood
沈明霞回答：
forseveralweeks提示用完成时态
句子的主语是thevillages,因此要用被动
所以选C
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