8.In the cave they found the very book, the cover of _______was torn.

A.which               B.what                 C.that              D.whose

【解析】A：此题为非限定性定语从句，从句中介词of缺少宾语，that 不可用于非限定性定语从句里，whose 需要修饰其它名词，what 为连接代词和疑问代词，不用于定语从句中。Which指代the very book,在从句中作宾语。