A merican-style fast food chains are now very popular all over the world. T hey help you save time and enjoy life. T he most popular fast food is a hamburger as sold in the chains of Mcdonald ’ s. If failing to sell in 10 minutes, a hamburger should be thrown away as rubbish. P izzas are considered as one of the typical American fast food too. I n America, pizzas may be ordered by telephone and sent to your home. A pizza may be large enough for four people.