21.  The first group was seven boys.

22.  After them, the second group was six girl and a mischievous boy.

23.  I am going to take part in a healthy serve group.

24.  In the group, I can learn how to get along with others.

25.  For another example, college students can enter some society's serving groups, like green volinteer serving group, or some group for serving the old people.

26.  In my opinion, I want to learn more through TV, radio and newspaper and I also want to take an active part in a serving group.

27.  Moreover, they can anticipate in some groups.

28.  These groups often have social services for people.

29.  But we learn primarily from school, and the lecture and the group learning are the most usual methods.

30.  Group learning method is an old method which is widely used.