what shall i do for my english study

I think I've answered a question like this on MyLot before. As much as you study and do language exercises, the best way to learn how to speak enlish well is by speaking to, or listening to native speakers. Now, since English is not widely spoken where you live, you have two options. OPtion number one is to watch as many movies and television shows that you can that are in modern English. This helps a lot of slang and just hearing how English speakers speak in everyday life. For instance, use contractions (ex. can't, won't, don't) and learn what things that used to be seem as grammitically incorrect are now okay in speech. Another thing you can try is use the internet to find native English speakers around you. You might be able to convince them to give you one-on-one speaking lessons and/or practice for a small fee. You might even find discussion groups of others learning English so that you can practice with them. Good luck!

Obviously talking on mylot with people will help improve your english vocabulary and you can get help with any words you are having difficulty with. Other ways that may help are reading books written in english. However this will not help with your pronounciation maybe you could get some english spoken audio books so you can listen to the language if you search the internet there are some free ones you can download.