Dear John,
I was excited to recieved your mail this morning and also really happy to learn that you will soon come and visit our country. Please don't forget to visit me too when on way passing the city where I am living.
In your letter, you also were worried about the communication problems might arrise and would ask for some simple body language, which I might be able to teach you. Well, unfortunately, I don't think I know much but just a few. Such as waving your hands means 'good bye'; nodding your head means 'yes' ; shaking your head means 'no'; and point your nose means 'you did it'!
Apart from the above, I seem to be unable to think of any more, so sorry! But I hope those could still help you a bit. As the matter of fact, many of our people now know a bit of English. I am sure your would not find communication a slight problem at all. I am looking forward to meet you soon. In the meantime, pleas keep in touch. Best wishes!
Best pen pal of Yours,
替你写好了,希望会令你满意采纳,谢谢。