语法填空Only few remember what life was before,这里边的what 为什么不是填ho

语法填空Only few remember what life was before,这里边的what 为什么不是填how
原文是：
There was a blind girl who hated herself just because she was blind.She hated everyone,except her loving boyfriend.He was always there for her.She said that if she could only see the world,she would marry her boyfriend.One day,someone donated a pair of eyes to her and then she could see everything,including her boyfriend.Her boyfriend asked her,“now that you
you can see the world,will you marry me?” The girl was shocked when she saw that her boyfriend was blind too,and refused to marry him.Her boyfriend walked away in tears,and later wrote a letter to her saying:“Just take care of my eyes dear.” This is how human brain changes when the status changed.Only few remember what life was before,and who’s always been there even in the most painful situations.
我是根据how life is 和what life is like来判断的,可是里边life was 后没like,我就填了what,可是答案是what,为什么,希望高手帮我忙!