I ............. brush my teeth before bed.
Must
Lisa ........... touch the sword, it belongs to the museum.
Mustn't
You ........... be quiet, your brother is sleeping.
Must
Before the lesson, we ........... prepare our books.
Must
Ben ........... do his homework.
Must
When you go to a museum, you ......... follow your teacher.
Must
She ......... run in the classroom.
Mustn't
To play video games, you ........ tidy up your room first.
Must
She needs to learn English. She ....... listen this lesson.
Must
You .......... shout in the library.
Mustn't
