His plan was such a good one ----we all agreed to accept.填as

as
accept 是个及物动词,缺宾语,所以用关系代词as,引导定语从句
His plan was such a good one __as__we all agreed to accept.（定语从句）
比较：
His plan was such a good one __that__we all agreed to accept [it] （结果状语从句）
请在客户端右上角评价点“满意”即可,
再问： 好，谢谢啦
再问： 及物动词 缺宾语要用as么？
再答： such....as.... 结构 当先行词被the same, 或者such 修饰时，一般用as 引导定语从句