Must and Mustn't

1. You _______ respect other people.

2. Everybody ___________ be impolite with people.

3. Pedestrians ___________ use this route.

4. This is a dangerous factory. Everybody ________ use protection clothes.

5. Notice: Visitors ________ take picture.

6. Notice: Everybody ________ wash your hands here.

7. Informative: People ________ use the cellphone in this cinema.

8. Danger: You ________ enter here.

9. I am at school. I ________ my teachers.

10. They are at the library. They __________ talk in high sound.