We must
1 wear school uniform;
2 not smoke;
3 show respect to our teachers and friends;
4 queue up when having a meal;
5 not play with a mobile phone;
6 show good manners;
7 listen to the teachers carefully;
8 work hard;
9 not be late for class;
10 not go out on school nights;
11 get along well with others;
12 save water and power.