options: m : i see . i need to renew the book after keeping it one month . m : oh , i need to renew it twice if i keep the book for half a month . m : so if she ca n't finish reading within half a month , i need to renew it , right ? m : i need to renew the book after keeping it one week , right ?
article: f : good morning , mister black . m : good morning . could you help me please ? i 'm looking for some books for my mother . f : ok. what kind of books is she interested in ? m : she 's very fond of romantic love stories . f : i see . what about this one ? has she read it before ? m : i 'm not sure . but she probably wo n't remember the story even if she has . she 's very forgetful . f : how old is she ? m : she 'll be 90 next year . f : no wonder ! remember to renew it if she ca n't finish reading it within half a month .