31.  Before I enter the university, I hold this impression about dormitory supervisors, as well as many people else.

32.  I also not noticed her before.

33.  Before the evening party I was in the backstage, a quite beautiful girl with a fancy dress walked past me and greeted to me.

34.  I was so strange that I was sure I didn't know her before.

35.  Learn more before you judge is the truth.

36.  Before we enter our college, life there meant to be a heaven for us.

37.  All we saw before are superficial.

38.  Before they start to learn something, they have to choose what to learn and be aware of what they really like to do.

39.  They wanted to enjoy more about the freedom and to feel the world before taking the responsibility of family.

40.  Unfortunately, before I could reach there as soon as I could, someone also had discovered the table and sat there comfortably.