21.  Um-please show me your ID card and fill in sheet.

22.  She must put her hand up immediately after the question is given and can always show the right answer to her class, like Hermione in Harry Potter.

23.  Stereotypes of a group of people can affect the way society views them, and change society's expectations of them.

24.  We pay attention to every word that maybe linked to others base line and try to cater to others' hobbies.

25.  She may wear a pair of old-fashioned glasses, and always sweeps you from top to bottom, with skeptical eyes, as if you are a suspect.

26.  After one-year study in the university, I get more knowledge, meet more people and learn more on this campus.

27.  Participating in classes actively can not only help students understand new knowledge better and reduce misunderstandings between students and teachers, but also enhance teachers' enthusiasm and warm the class's atmosphere.

28.  Even though the authority arranges some general curriculum and cross-major curriculum, most students do not apply their minds to it and just mess with it.

29.  Stereotyping is in many forms and can be seen in many places.

30.  It may mislead these young students and stay with them for a lifetime.