题目内容：

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的词或使用括号中词语的正确形式填空。

Today，people have more freedom(自由)and are more casual(随意的)．1. your friend invites you to a party，do you know how you should behave to be polite？Behaving 2.(good)at a party starts even before you arrive.Here is some advice for you.

Please tell your  friend early that you3.(go)to the party.If you'll arrive4.  for any reason，try to let your friend know early.

Choose the right clothes5.(wear)to the party.If you have a written(书面的)invitation，read it6.(careful)．If you don't have a written invitation，ask your friend.He or she will be able to tell you7. kind of clothes you need to wear.

Don't arrive more than 15 minutes8. the start of the party.Wait outside 9. a few minutes if you get there too early.

Don't forget 10.(say)goodbye to everyone before you leave.