How long _______ the book _________(can keep)?

问题描述:

How long _______ the book _________(can keep)?

can keep 这本书能保存多长时间?can 后面加动词原形

can,be kept中国人考试专用句。不如这句地道How long can I keep it(this book)?

can,be kept ,这里的keep 是借的意思,构成了情态动词的被动语态:“can be +过去分词”

can ;be kept

can ,be kept