People want to know something was up by the look on their faces,it is often called watch a person's every mood.

     My teachers ever tolded me that everybody is a good salers inborn .When you was a baby,he/she will draw his/her mother's attention in crying; so you want to know something was up by the look on their faces.They was wanted to teach me how to get along well with others and communicate with others,and I often asked for their advice on social expriences problems,they advised that I should work on sale ,so you will gain social expriences and learn how to get along well with others and I believed you life will become rich and colorful.