1. MUST-MUSTNTMUST-MUSTNT
OBLIGATIONSOBLIGATIONS

2. We must give seat toWe must give seat to
old peopleold people

3. We must help to theWe must help to the
disabled peopledisabled people

4. We must brush our teethWe must brush our teeth

5. We must listen to ourWe must listen to our
teacherteacher

6. We must keep off theWe must keep off the
grassgrass

7. We mustn’t disturb otherWe mustn’t disturb other
peoplepeople

8. We mustn’t make noiseWe mustn’t make noise
in classin class

9. We must obey theWe must obey the
school rulesschool rules

10. We must wear schoolWe must wear school
uniformsuniforms

11. We must stop at the redWe must stop at the red
lightlight

12. We must do ourWe must do our
homeworkhomework

13. We must come to schoolWe must come to school
on timeon time