Is it really impossible to make the program a little bit more intelligent than it currently is? You erroneously write "Aamir will go to his village i August", and it says "you used the wrong word", i.e. "i" instead of "in". And there is a lot of similar cases like this ... (another time, for instance, I had inadvertently written "wil" instead of "will" ... WRONG)
अपना is used if the person possessing something is the same as the subject of the sentence. For example:
आमिर अगस्त में अपने गाँव जायेगा । – Aamir will go to his (Aamir's) village in August.
आमिर अगस्त में उसके गाँव जायेगा । – Aamir will go to his/her (someone else's) village in August.