--How long___the book be kept?--For two weeks,but you____ret

--How long___the book be kept?--For two weeks,but you____ret How long___you__the book?(keep)For two weeks. Jack____the book from the library for two weeks.A.kept B.has He has kept my book for two weeks（改成被动语态） I must return the book to Li Lei.I( )it for two weeks.A.kept she had bought book for two weeks ----When___you___this book?----I___it for two weeks. You may keep the book for two weeks,But you mustn't lent it You can keep this book for two weeks.But you can't lend it t 14.You may borrow the book for two weeks,but you must return How long may i keep the book?You ____ keep it for two weeks how long the book can be kept (for) 要不要加for 什么情