Сделать предложения вопросительными и отрицательными 1)all the banks provide credit services2)this bank is asking ten percent interest3)there is difference between banking systems in russia and western countries4)a line of credit is the maximum amount of money that a company can borrow from a
bank5)he has already changed currency in foreign exchange departament.​

 1) May I ask for a piece of this wonderful cake? 2) We have a lot of work to do and so we'd like to have one more pair of hands. 3) This piece of chalk is very small, I cannot write with it. 4) Helena took a piece of paper and drew a beautiful flower on it. 5) I think you should wear the new pair of shoes to the party. 6) There were three thick pieces of bread on the plate. 7) That day I bought six pairs of beautiful Chistmas socks. 8) Peter was wearing a warm jacket and a strong pair of boots. 9) Sara couldn't see well and wore a pairs of heavy specs. 10) Listen! This is my favourite piece of music.

Flag of the United States of America is a flag with seven red and six white horizontal stripes. Blue rectangle on the left side represents the Union. In the canton of blue - 50 white five-pointed stars. 50 stars in the canton represent the 50 states. 13 pages - 13 colonies that formed an independent state (New Hampshire, Massachusetts, Rhode Island, Connecticut, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, New York, New Jersey, Pennsylvania). The blue color olitsitvoryaet loyalty, devotion, friendship, justice, truth, red - courage, zeal, fervor, white - purity and morals.
First, the flag used in the manufacture of 7 red and 6 white stripes, or vice versa, the stars are often portrayed not five, and six-or seven-pointed, their location in the Canton also was not permanent.
  red symbolizes valor, courage and diligence, white - purity of mind, integrity, freedom, integrity, and blue - the stamina, loyalty, perseverance and justice. Stars symbolize sovereignty.