To whom is the letter addressed是什么句式

The doctor__she sent is very well knownA for whom B to whom C of whom D whom大家帮个忙啊, The man *you played a trick is from Canada.A.to whom B.at whom C.on whom D.whom The doctor( )he sent her friend is very known.A.to whom B.by whom C.at whom D.whom the man is i nodded to 是不是the man whom is I nodded to的省whom形式.另外还有个：the man to whom is I nodded he is the student()we want to talk 为什么是to whom而不是whom He is the man whom I invited to the party.这句话中可不可以省略whom whom is the letter To whom is the letter addressed是什么句式 the man whom you spoke to just now is my He is the man __ I supposed was capable of doing such a thing.who?to whom?of whom?whom? the lady( )you talked is a famous writer.A whom Bwho C to whom Dthat the man whom I nodded to is Mr.wang可不可以变成：the man to whom I nodded is Mr.wang whom to serve is to He is the ( )person ( ) the teacher spoke.A.very,whom B.very,of whom C.just,of whom D.just,to whom 英语语法问题：He is the man to whom I gave the money这句话中whom前面为什么加to he is the guest to whom the manager first introduced 这里为什么用to whom 怎样理解这个句子? To see to whom it To see to whom is the person ---I spoke just now is the manager that I told you aboutA to whom B whom C to whom D which