根据所给汉语提示，在空白处写出单词的正确形式，每空一词

It is very important to stay healthy. I have a neighbor. I often see her exercise in the morning. She looks young and beautiful, （虽然）she is over seventy years old,

Last week a reporter from a （杂志）interviewed her and asked how to keep in good （健康）.She said it was quite easy. Keep （你自己）active and find a hobby. Besides, it's （必需的，必要的）to learn at least one new thing every day.

（然而），according to the （结果）of a study, twenty （百分之……)of the students don't exercise at all! They eat junk food （几乎）every day and sleep less than six hours every night.They have to learn more about healthy habits. I （真正，确实）hope all people will stay young and healthy.