Body language, one ofthe most powerful (mean) of communication, uses the movements of our body to show our feelings and thoughts. Some body languages are same throughout the world. For example, smiling shows happiness and puts people at ease, (nod) the head up and down is to say agreement, and shaking the head from side to side (suggest) refusal. others are totally different. Take greetings for example. English people do not usually stand very close to others, while the Canadians approach others closely and are more likely (touch) them. Most people now greet each other by shaking hands each other, but some cultures use other greetings as well, such as the Japanese, prefer to bow. (general) speaking, we ought to study international customs to avoid (misunderstand).