options: f : okay , i agree that two months is enough for this project . f : three months is too long . i think we can finish it within two months . f : you 're right . so this project will take 4 months in total . f : i agree with you that 4 months is not enough for this project .
article: f : how long do you think this project might take ? m : i 'd say about three months , but it could take longer if something unexpected happened . so we 'd better allow an extra month .