Must:

1. We must study hard

2. We must to throw garbage in its place

3. We must be diligent children

4. Students must obey the rule of the school.

5. Students must wear the uniform.

6. Students must respect the teacher.

7. Students must attend class on time.

8.You must be polite, courteous, and respectful all the times.

9. You must pray five times a day.

10. You must keep the school clean.

must not

1. you must not to go to that party

2. you must not to study till night

3. you must not to be a bad boy

4. you must not to be a naughty girl

5. people must not throw garbage in here

6. people must not smoke in here

7. you must not skip class to the canteen

8. people must not crowd, to prevent the virus

9. She must not pay for dinner because she doesn't have any money

10. You must not lose your key