21.  She said it was easy to make more friends and you can have more fun because you have eleven roommates, eight more than me.

22.  " I replied without hesitation because these words were nearly truism in everyday life.

23.  I daren't say so because many people had the same idea as Lily's.

24.  It is because that their families support them to have access to better education.

25.  I couldn't believe the boy was a sophomore because in accordance with my observation, his face was bright and full of curiosity which was so "convincing" that I didn't think it was necessary to ask his grade.

26.  We refuse to force ourselves to dive in the ocean of knowledge as the study kings and queens do, because we do want to be like them.

27.  I don't care about sexual problem because I'm used to live with numerous girls.

28.  We shouldn't look down on anyone just because he/she belongs to "that group".

29.  These are obviously unintelligent because it is a common sense that individualism is more crucial when we judge a person.

30.  I had stereotype on people from Shanghai, because I was once asked to pay $5 when I asked for directions.