英语翻译

题目

英语翻译
He studied hard at school when he was young (　) contributes to his success in later life.
A.which B,that C.,which D,so that
这道题的答案选择的是C,谁能告诉我A和B为什么不选?
Mr Smith will move into his new house next monday,(by which time)it will be completely finished.
解析一下括号中which 的成分,还有by为什么可以放在那个位置?
The argumentative form of writing is one in which problems are disscussed.
这句话的翻译.

答案

1.A答案是不是打错了,如是what ,what 只引导名词性从句,在名词性从句（即主语从句,宾语从句,表语从句和同位语从句）中作主语,宾语,表语或定语.例：1.What makes him happy is unknown to us .(what作主语从句中的主...