Is everything ----we need to do --- 为什么填that done 什么语法.

问题描述:

Is everything ----we need to do --- 为什么填that done 什么语法.

that we need to do为定语从句,修饰everything。
is done是一般现在时态的被动语态,构成句子的谓语部分,

Is everything ____we need to do_____?为什么填that,done 什么语法?
答:Is everything done?