what are your weakness in Engilish

I have studied English for very long years, but, until now I need to learn and keep in mind the word to be used in proper way. Additionally, sometimes I want to use the sensible words for the a proper atmosphere more than the basic words and it is very difficult part toe me. Moreover, I don\'t know how to study this part by myself. The second thing is listening. I tried to practice a listening skill whenever i commute but, i feel that is not enough to improve a listening skill. A few academies that i attended guided me to speak clearly and to know the more word for the listening abilities. Therefore, I may already know I should spend my time and concentrate to practice a speaking and listening. But, believer or not. I don\'t have really enough time .So, this point is also my concern how to practice efficiently.