短文填空。从下面方框中选出10个单词，用它们的适当形式填入短文空格内，使短文意思正确、通顺(每词限用一次)。

The verb“chat”means to talk(to someone)in a friendly，informal(非正式的)way．Today there are many1on the Internet where you can chat．You can chat with people all over the world，in many languages and about many subjects or topics．These places2“chatroom”．Sometimes you need to register(注册)to enter a chatroom．You need to provide a username and possibly your e-mail3．Your username does not have to be your4name．It can be any name you want．When you have your usemame，other people in the chatroom will call you by that name and5else can use it．

Chatting is a good way to6your informal English．Messages in a chatroom are usually short sentences．Sometimes7are not even sentences，8just a few words that are not really grammatically correct．It’s a typical way in which we speak in a9conversation with friends．To save time，people often use abbreviations like TTYL(talk to you later)or IDK(I don’t know)．So don’t go to a chatroom to practice“perfect”English．Go to a chatroom to practice informal English and find new10．You can even use a chatroom to help improve your typing skills if you want．