"sentences must"
1° I must wash my clothes
2° I must build your bed
3° I must clean my room
4° I must bathe daily
5° I must get up early to go to school
"sentences musn't"
1° I musn't coming home late after a party
2° I musn't eating junk food
3° I musn't littering my room
4° I musn't skipping to school
5° I musn't sleep late at night
