81.  When he played the Guqin, his facial expression was serene and solemn .

82.  When she was drinking, she found me.

83.  When it came to her major, her tone is very natural, without any dissatisfied.

84.  The problem is when we select elective courses we won't choose science courses but they especially the boys can choose ours.

85.  My dorm mate gradually told us some interesting things in the course and when she finished the homework successfully or worked out some difficult question she was excited more than ever.

86.  When I was in senior high, I had to study math, but it wasn't my type.

87.  I have never have the sense when I think of some questions like - Why did Li Bai use this metaphor to describe this thing?

88.  In our university, a place where we can't get too close to most people, stereotyping always happens when we judge someone.

89.  For example, when I saw CC at the first sight, I found her such a beautiful girl, everything she had and everything she did seemed to show that we are from totally different worlds.

90.  However, only when we get familiar with someone can we know exactly how he or she is like.