阅读下面短文,根据所给中文正确拼写单词，使短文意思完整。每空限填一词。
       Before you go to another country, it is a great  ____ (帮助)if you know the language and some of the customs of the country. When people ____ (见面)each other for the first time in Britain, they____ (说)“How do you do.”and shake hands. Usually they do not shake hands ____ (在…以后)they haven’t met for a long time. Last year a group of German ____ (学生)went to England for a holiday. Their teacher told ____ (他们)that the English people hardly shake hands. So when they met their English friends at the station, they kept their hands behind their____ (背).The English students had learned that Germans shake hands as often as ____ (可能),so they put their hands in front and got ____ (准备)to shake hands with them. It made both of them ____ (笑).