You can ----the book for three weeks.A.borrow B.keep C.lend

B.
keep the book.keep 保存.可以与for three weeks,这样的时间段的状语使用.
borrow,借入,lend借出,bring 拿来,是不可以持续性动词,不能与时间段的时间状语连用.
如.die,
he died last night.
he has been dead for 10 years.