根据短文意思，用方框中所给词语的适当形式填空。（有两项是多余的）

Address，want，please，speak，practice，really，nobody，friendly，them，but，usually，help

The verb“ chat” means to talk (to someone)in a friendly, informal(非正式的)way. Today there are many   on 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 places are   called “chatroom”. Sometimes you need to register( 注册)to enter a chatroom. This means that you need to provide a username(用户名)and possibly your e-mail    .Your username doesn’t have to be your  name.It can be any name you want. When you have your username, other people in the chatroom will call you by that name and    else can use it.
Chatting is a good way to   your informal English. Messages in a chatroom are usually short sentences. Sometimes   are not even sentences,    just a few words that are not really grammatically(语法的)correct. It’s a typical way in which we  in a quick conversation with friends. To save time, people often use abbreviations like 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    .
You can even use a chatroom to help improve your typing skills if you want.