How can I become fluent in English?
Write at least 1 essay per day - It is the ultimate test of what you are learning, and if you are learning something at all. Pick a plain paper, think of a topic, and write an essay (300 words max) on it. Do it every day. It will very productively force you to raise the level of the game.
Be measured while you speak - Do not try to outgun anyone in the group. Take a few seconds before you react (2 or 3 seconds, say). That will ensure that you do not over-react, instant-react, or wrong-react.
Talk to yourself - You will never be ashamed doing that. Keep doing it regularly. It will open up your tongue.
open up 开发； 打开； <非正>开门； 切开
Lorna found that people were willing to open up to her.
We had to hammer and shout before they would open up.
"Police! Open up!" — "Oh well," I thought, "here we go."
outgun vt.在武器上超过； 武器多于； 火力压过
He soon hit top speed to outgun all his rivals in the opening qualifying session.