He kept a book, in which were written the names and addresse

要看出本句的定语从句用的是被动语态,我给你改写一下这个句子He kept a book where the names and addresses were written。这里的定语从句的关系词where 可用 whichl来代替,但其前要加介词in,因为which 是相当于名词的关系代词,而where相当副词。