reading your post, i take it your a failed assylum seeker from Afghanistan, and went back and applied for and was granted a spouse visa, which has nearly expired.
like others have already said, you need to search for ILR on the forum,
but you need 20 letters and documents addressed to you both for the last 2 years to show you both have been living together.
and i think you will need to either take the 'life in the uk' test or you will have needed to have attended a combined English language (ESOL) and citizenship classes course, was your ESOL a combined citizenship course???, but check with IND and if your visa is going to expire soon, i don't think you will have time for the ESOL course, and if you don't pass the test or do the course, you will have to apply for FLR instead of ILR..