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Mr.robinson never went to a dentist, because he Was afraid. 

But then his teeth began hurting another, and he went to a dentist. 

The dentist did a lot of work in his mouth for along time. 

On the last day Mir Robinson said to him:"How much is all this Work going to cost?"

The dentist said, :Twenty-five pounds,"

But he did not ask him for the money. 

After a month Mir Robinson phoned the dentist and said:"You haven't asked me for any money Your work last month..

Oh ,the dentist answered, "I never ask a gentleman for money. 

"Then how do you live"?Mr.Robinson asked. 

Most gentleman pay me quickly, the dentist said, but Some don't. 

I wait for my money for two months, and then I say, That man isn't a gentleman, and then I ask him for my money.