The letter __ I received was from my father,用who,which,whom

The letter __ I received was from my father,用who,which,whom The letter that I received was from my father 这个句子中为什么用that不 The ,I,received ,yesterday,letter,that,was,from,my ,parents. The letter (that)I received was from my father.这句话哪个是主句,哪个是从 改错The first gift which I received was from my brother I received a letter from my father last Sunday 改为同义句 I( )( ) I received a blame from my father. Yesterday I received a letter from my parents,who are both o 定语从句改写 I received a letter.It was from my girl friend i just won the match i have just received a letter from my b 如何把the letter is from my uncle和i received it yesterday合成一句话 The letter is from my friend和I received it yesterday 并为宾语从句