she ( )aS the host of the charity last week .

问题描述:

she ( )aS the host of the charity last week .
a waS chosen b chooses c chose d will be chosen

这里选择A
首先她和choose是被动关系,表示被选为
另外i是last week,所以是过去被动语态,选择A不客气~还望采纳一下O(∩_∩)O哈!