Ⅰ、1、percent
2、results
3、writer
4、mind
5、through
Ⅱ、1、Most；such as
2、more than
3、Although/Though；go online
4、answers to
5、to relax，through exercise
Ⅲ、1、once or twice a week
2、never
3、most
4、exercise
5、some
6、over 80%
7、use the Internet
8、about 26%