11.  It would have been natural for him to got sleep, but when I looked up he was looking at the foot of the bed, looking very strangely.

12.  There are also many other stereotypes on campus and it is quite easy for you to be confused.

13.  It is not a place for us to have a break after the journey in senior school, right?

14.  I must put all my efforts in study and there isn't much free time for me to participate the activities-- " Lily said gloomily. "

15.  If you spare efforts on other trivial things, it may be hard for you to hunt for a decent and well-paid occupation after graduation.

16.  For me, it was difficult for me to imagine how people can survive in such an environment.

17.  The other is that it is taken for granted that one must take part in the Students' Union.

18.  For your convenience to understand the whole sentence, I should affirm you that it is a stereotype in Nanda that boys should match girls.

19.  It's reasonable for us to grumble about the ceremony of welcoming the freshmen.

20.  In another word, it's time for us to rob the cradle, especially to girls, who haven't found a boyfriend.