I'm Kate. I'm an American girl. I am thirteen. I'm in a middle school in Shanghai. My English teacher is a Chinese girl. My good friend is Mary. She is an English girl. She is thirteen, too. She is in Wuhan. I'm in Grade Eight. But she is in Grade Nine. We often have a talk by E-mail. We are both good students. Kate is from the   _  .
UK HK USA UN