how long have you kept this book?这句话对吗?

how long have you kept this book?这句话对吗? how long have you kept this story book改为同义句 how long __this how long have you kept the book?的同义句. how long you have kept this book for for 要不要加的啊 请说详细理由 How long have you had your watch?这句话对吗? How long have you been away there这句话对吗 How long have you _______(have) this book? How long have you kept the book borrowed from the library How long have you brought this book?哪有错 How interesting enough book this is!这句话对吗? How long have you ______the book? How long have you _____this book?