either, neither, nor, what, whic

either, neither, nor, what, which, that
They produced two reports, ____ of ____ contained any useful suggestions.
【正确答案】：neither; which
【题目解析】：【考点点击】本题考查非限制性定语从句的关系代词。【要点透析】 neither用作代词,表示“两者都不”,用于否定句。定语从句的关系代词指代前面的 reports,并在从句中作主语,故用 which。