CLASS RULES(Obligation & Prohibition)
Must:
- You must study.
- You must raise your hand.
- Your must sit proferly.
- You must copy the vocabulary in your notebook.
Mustn't:
- You mustn't chew gum in classroom.
- You mustn't eat or drink in classroom.
- You mustn't open you partner's lockers.
- You mustn't visit facebook in class.