[Corrected] I cann't hear what they said.

[Jim Lee]

Your writing	My corrections
These days I feel short of English. When I work at Korean restaurant, Sometimes Foreigners come to my restaurant. They talk about business or private matters with Koran staffs. I approach their table and pretend to do other things. I think" it's the best time to check my English!" So I try my best to listen to what they are saying as possible as I can. But It's hard for me to understand it. Whenever I couldn't understand their talk, I feel short. How long does it take to listen to English?	These days I feel short of English. When I work at the Korean restaurant, Sometimes Foreigners come to my restaurant sometimes. They talk about business or private matters with Korean staffs. I approach their table and pretend to do other things. I think" it's the best time to check my English!" So I try my best to listen to what they are saying as possible as I can. But It's hard for me to understand it. Whenever I can’t couldn't understand their talk, I feel short of my abilities. How long does it take to hear listen to and understand English?
Comment: Excellent writing!  Personal Comment: You must be very patient….it does not happen overnight.  Keep trying.