has she _____ the book before?

问题描述:

has she _____ the book before?
填A reads B reading C readed D read

D,read 是不规则动词,过去分词还是read,只是读音不同.读 作:/red/
have/has+动词的过去分词表示现在完成时态.
她以前已经看过这本书了吗?