I have worked in American Bank based in my origin of the country but mostly the people we cater are international clients (N.A) then I have worked abroad in Saudi Arabia in American Restaurant. I have been working in an American company based for so long, I can teach you on how to be neutral and improve yourself in public speaking, this is the most important thing, develop your confidence. Once you are confident You will be able to deliver everything. I used to study in one of the most reputable universities in my country.
The easiest way to learn english is to have someone to talk to you almost everyday, it makes your vocabulary good and so is your pronunciation
As long as your practicing and speaking it then it will be easier to achieve your level of desired in English
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