There are several ways in which American 11 customs are different from those in other parts of the world. A guest invited to dinner is 12 to arrive on time. The use of the fork and knife is often different. The fork is used mostly in the right hand. It 13 the food without help from the knife, which is generally used only to cut meat or potatoes, and is placed to the right of the plate when 14 . And while in many places the napkin is put around the neck, here it is put on the lap. Finally, when Americans eat certain foods, they use their fingers. For example, at 15 they eat chicken, pizza and so on with their hands only.