根据句子意思，在下面句子的第一个空白处填入介词，在第二个空白处填入关系代词whom或which。

She wrote a book, the name ________　________ I’ve forgotten．

根据句子意思，在下面句子的第一个空白处填入介词，在第二个空白处填入关系代词whom或which。

The old man has two sons, one ________　________ is a teacher．

根据句子意思，在下面句子的第一个空白处填入介词，在第二个空白处填入关系代词whom或which．

The old man has two sons, one ________　________ is a teacher．

根据句子意思，在下面句子的第一个空白处填入介词，在第二个空白处填入关系代词whom或which。

There are four students in the classroom, all ________　________ are reading English．