答案:1. 项目起源______ originated from ______. It dates back to ______.2. 项目益处It can help you ______, ______and ______.3. 项目分类In general, there are ______types of ______most popular among people.They are ______, ______, ______, ______ and ______.4. 练习要求 / 练习时间As for the practicing time, you can practice ______. You can practice ______ minutes or ______ hours each time, but ______ is a proper period.5. 练习地点You may go to the ______ or just practice it in ______. If you want to ______, just practice it ______.6. 练习服装When practicing , you'd better wear ______ clothes and ______ shoes.