一道专四的题After( )seemed an endless wait,it was her turn to step into the doctor's office.为什么里面填的是what,这要怎么翻译呢可是如果填what的话这要怎么解释，那which可以吗

一道专四的题After( )seemed an endless wait,it was her turn to step into the doctor's office.A.it B.that C.what D.which正确答案是what为什么不能选that? 一道非谓语的题It seemed that he had regained his health after the operation.=He__________his health after the operation. 一道专四的题After( )seemed an endless wait,it was her turn to step into the doctor's office.答案是what,为什么不是that呢?that在定语从句中不是也能做主语的吗?另外还有这道题：Firms that use computers have found that 一道专四的题After( )seemed an endless wait,it was her turn to step into the doctor's office.为什么里面填的是what,这要怎么翻译呢可是如果填what的话这要怎么解释，那which可以吗 after what seemed 是什么意思 专四的一道语法题There seemed little hope that the explorer,having been deserted in the tropical forest,would find his way through it.这道题是所谓的表原因的分词完成时,但是意思我看不懂,也不知道为什么这里会用 英语语法判断after hearing the bad news,he seemed ( sad ).为什么不是to sad,seem的结构是什么? 一道英语题 Was it in ____ seemed like a tomb ____ they found the treasure? 一道高中数学必修四的题 his plan seemed to be too difficult,but___it proved to be practicable.这题答案是before long,我知道是对的,但是我疑惑的是选shortly after 为什么不可以,我觉得意思也对啊! ,英语专四语法一道 第三题 专四语法一道,第4题, After what seemed an hour ,he came back. After what seemed to be a hundred years 〔太简单了,直接是送分的题哦!〕1.It is fine today .〔请对 fine 提问〕2.I think Canda will the next World Cup .〔请对 Canda 提问〕3.After she heard the news,she seemed to be angry .同义句转换：After she heard the news ,s The doctor ——after he ——the patient.The doctor after he the patient.A.looked worrying ,looked over B.seemed like worried; looked afterC.looks worried ,looked after D.seemed worried; looked over选什么啊,我选的D,对了,但不知道为什 After __ seemed hours of waiting in line,finally it was our turn to pass the gateway.为什么选what 感觉用上去怪怪的 After working for the whole day.he____tired.A.looked B.looks C.liked to D.seemed to帮看看A与B的区别,为什么B不行谢谢!