Ⅰ、1、Fifty - five percent of the students usually use the Internet.
2、Eighteen percent of the students never use the Internet.
3、Twenty - two percent of the students always use the Internet.
Ⅱ、1、It is good for us. It makes our heart and body strong.
2、Twice a week.
3、We can exercise at fitness centers ， because they have a lot of equipment there.We can also exercise together with our friends.
4、略