This is my first time to post here... i received my refusal of entry clearance after two month waiting as a fiancee to come to uk from british consulate in China.

I want to marry with my fiance as soon as i will arrive in Uk as we are planning to have wedding party oversea. However, the ECO was satisfied my situation.
I just post my refusal letter here, plz give me some advice if I could appeal or make a fresh applicaiton. I am really hopeless. now I have not seen my fiance more than 10 months. I really want to finish the case asap. Thanks for any useful advice.
my refusal letter is as follow:
you state that you wish to travel to the uk in order to marry ur sponsor. however, you have failed to produce any evidence of any arrangements for the wedding. e.g. date or venue booking. you also state you will marry within 4weeks of arriving in the uk. you appear to have carried our little research into the marriage laws of the uk, and the residency requirements to be able to marry in the uk. furthermore, the letters supporting to have been written by you and your sponsor are of the same formatm paper and english style and i am not satisfied as to the genuine author of either letter, or that the letter have been written by you and your sponsor individually. 290(I) (iii)
Acturally my fiance wrote the letters for me and him as i was too busy with work. and we also sign our name individually. I just realized it was a silly mistake to let him done the letters for us which made ECO susipious about our ture 4 relationship.
By the way, I am considering another important reason why i have been rejected this time. I have entered in uk for studies in 2005 and got degree in 2007. I have applied a trainning course in uk 2008 which has been granted 18month uk student visa. however, i did not complete this couse finally. I just left uk before my last visa has been expired. I did not overstay but i was just not able to provide any certificate for my last student visa issued.
when i apply my fiancee visa this time, ECO did not even mention my last visa history. However, I am wondering if it is kind of 'hidden' reason to rejected me as a fiancee? Is it any possible my case will involved with immigrantion terms 320 to send me in trouble?
Can anyone give me some help? many thanks to everyone
