[填空题]of by may situations custom comes named use for want much theMany Americans1.________ informal shorter names instead 2.________ their formal name. For example, someone 3.________ Samuel Johnson may be called Sam4.________ his friends. Likewise, Richard Brown may ask you to call him Rick; Barbara Stein may 5.________ to be called Barb. The family name6._______ second in the U.S."John Smith's" family name is Smith. In formal 7.________,or when you meet someone 8.________ the first time, you would want to call him "Mr. Smith". Often, even people you do not know very well 9.________ want to call you by your first name —— this is the informal American 10.________ Americans think it is friendlier and more relaxed to use the first name.