阅读与回答问题

　　Partying is fun．But have you ever been invited to a party by a foreigner? What should you wear? Should you bring anything? If so, what? Don't worry．Today we are going to give you some tips(小提示)about partying with foreigners．

　　First, you should ask if it's a formal or casual(非正式的)party．Then you will know what to wear．It's as simple as that．At a casual party , it is customary to bring a bottle of wine or some other refreshments(点心)．It is not considered polite someone along with you unless you first ask your host．At more formal parties like birthdays, a small gift will be sufficient(足够)．Giving money would cause some embarrassment．Finally, never overstay your welcome．When it's getting late, it's time to thank your host for a wonderful evening and say good night．

1．How many kinds of parties is the passage mentioned?

2．What should you bring at a casual party?

3．Is it polite to bring other person to the party?

4．What would happen if you gave money at a birthday party?

5．What should you do when it's getting late?