In the United States, friendships can be close, constant, intense, generous and real, yet f 1 away in a short time if circumstances change. N 2 side feels hurt by this. Both may e 3 Christmas greetings for a year or two, perhaps a few letters for a while—then no more. If the same two people meet again by c 4 , even years later, they pick up the friendship where it l 5 off and are delighted. In the United States it is often considered more friendly to invite a person to people"s homes than to go to a public place. You can feel free to visit their home, share their holidays, or enjoy their lives w 6 fear that you are taking on a lasting o 7 . Don"t h 8 to accept hospitality because you can"t give it in r 9 . No one will e 10 you to do so for they know you are far from home.

（9）处填入（）

In the United States, friendships can be close, constant, intense, generous and real, yet f 1 away in a short time if circumstances change. N 2 side feels hurt by this. Both may e 3 Christmas greetings for a year or two, perhaps a few letters for a while—then no more. If the same two people meet again by c 4 , even years later, they pick up the friendship where it l 5 off and are delighted. In the United States it is often considered more friendly to invite a person to people"s homes than to go to a public place. You can feel free to visit their home, share their holidays, or enjoy their lives w 6 fear that you are taking on a lasting o 7 . Don"t h 8 to accept hospitality because you can"t give it in r 9 . No one will e 10 you to do so for they know you are far from home.