要求：
1．根据所提供的内容，适当展开想象空间；
2．条理清楚，语句通顺，标点正确，书写清晰、规范；
3．不得少于规定的词数。
It is sometimes important to learn about Chinese table manners. Write a composition saying what they are supposed do when you are eating in a Chinese restaurant with your Amrican friends.(80－100 words)