All_____is a continuous suooly of the basic necessities of life.A.what is needed B.for our needs C.the thing needed D.that is needed这个应该选什么?为什么?请解释下为什么选D？

All_____is a continuous suooly of the basic necessities of life.A.what is needed B.for our needs C.the thing needed D.that is needed这个应该选什么?为什么?请解释下为什么选D？
All_____is a continuous suooly of the basic necessities of life.
A.what is needed B.for our needs C.the thing needed D.that is needed
这个应该选什么?为什么?
请解释下为什么选D？

All_____is a continuous suooly of the basic necessities of life.A.what is needed B.for our needs C.the thing needed D.that is needed这个应该选什么?为什么?请解释下为什么选D？
不定代词只能用that引的定语从句.比如some ,any ,something .all...
这里是要一个定语从句的引导词,当然A-what不行,就是D了.