Hello Wang,

Maybe if you post a notebook entry with a recording we can all hear what is actually wrong. Is that an idea?

Then refer to it in this discussion. I think we should hear you to judge what you are doing wrong.

In my dialect of English, business is pronounced as /ˈbiznis/.  You can hear the pronunciation: http://media.merriam-webster.com/soundc11/b/busine07.wav

Sorry, wrong king.  It was King George VI.

It sounds more like a cry for tender loving care than a request for technical help.  "Mummy I can't do it!"

Most people can pronounce "business" if they practise. For the very few who have genuine difficulty, like King George V, one's sympathy goes to them. The good advice is this. If anyone suspects that he or she has a speech impediment or a psychological or neurological problem, the first thing to do is to see their family doctor, who will decide whether further tests should be performed by a specialist doctor.

Susan sent me a message to ask about King George VI.  The answer is he had a speech impediment and sought professional help.  More interestingly, the film "The King's Speech" tells his story.  Colin Firth won an Oscar for it.  The film is pretty much required viewing for all learners of English.