Do you pronounce the second T in twenty?

Yes, of course, I'm English.

Yes. Twen-t-y.                     

Yes twunty is how it's pronounced

Yes, it is pronounced.

Yes.                                          

Yes.           

Of course.                      

I do, as should anyone speaking clearly.

Yes, but it's very soft.   I can't stand people that do a hard "t" in the middle of a word.