Where are you from?--I’m from the United States

Where are you from?--I’m from the United States I'm glad you come back from the United States.please tell me I'm ( ).I'm from Shanghai.Where are you from? = =Hello.I'M David Black I come from the United States of Am Japen .2.A _____ are from the United States. are,from,Helen and Judy,the United States A------- are from the United States.--------comes after July They are from the United States.(改为同义句) They are from the United States.我可以写成这样吗?They are from the U What are you from?Where do you come from?I'm from China.I co from the United States 为什么用the from united states是什么意思