14.i'm interested in __a____you have said.a.all that b.all what c.that d.which为什么D不行?

14.i'm interested in __a____you have said.a.all that b.all what c.that d.which为什么D不行?
14.i'm interested in __a____you have said.a.all that b.all what c.that d.which
为什么D不行?

14.i'm interested in __a____you have said.a.all that b.all what c.that d.which为什么D不行?
you have said 是一个定语从句,修饰它前面的一个先行词的,如果选了D,就缺少了一个先行词.
翻译：我对你说的都感兴趣.

A.
all that = what
which you have said： 这样不和题意啊

你所说的话，应该是用what you have said，作为从句时，就只能用i'm interested in what you have said. 或者i'm interested in all that you have said.
which不能表示什么的意思。
明白了吗？