21.  Groups and races merge or split which depends on cooperation or clash of interests.

22.  We can gradually be familiar with the name after hearing his name called by others , or get something about the meaning of the name.

23.  This natural activity of human, which can be found in almost every countries, must have reasons or is a human instinct.

24.  One can do things he likes or develop new interests.

25.  Assuming that we are reading a passage filled with words we totally know nothing about, we can only pick up a dictionary or just guess its meaning.

26.  I agree with the statement, or say I think we should improve our vocabulary by reading more English materials like magazines and news written in English, rather than just memorizing a long list of words .

27.  Do us students learning English as a foreign language should try to or really need to read mass of books or watch lots of movies or using other methods that are more close to life to make us grasp more and more words?

28.  Those young faces conveying disappoint or even excessive joy turn to a common sight on many channels.

29.  On the other hand , if the young people fail in the contest, they will suffer psychological problems or even change their systems of values.

30.  So sometimes we call on the phone or meet for lunch.