Diplomacy is not for the weak

My favorite song is "Tsuki no mayu" composed and supposedly sung by Yoko Kanno. She composes much music for anime, such as the bulk of the soundtrack for "Cowboy Bebop"

你好。我请你帮我练习中文，我要也帮你练习英文，行吗？

it usually refers to the United States, since it has Oceans on both the East and West sides. When you want to say that all areas of a country have something in common, you can say, for instance, that all the people are friendly, from coast to coast. It basically just means that the entire place.

actually, speak for yourself is a term used when you are trying to turn attention away from yourself and onto the person who was accusing you. For example, if you are in a group of people and someone says that Andy never goes to class, and yet they never go to class to, you can say "speak for yourself". It basically points out that they are guilty of the flaws they point out in other people

I speak English, and I'd be glad to talk with you