5. 5
Fill in:
must - mustn’t
• 1. We….......smoke.
• 2. We………eat fruit.
• 3. We………play in the streets.
• 4. We………talk in the library.
• 5. We………be quiet in class.
• 6. We………climb up walls.
• 7. We………say “Good morning” to our teacher.
mustn’t
mustn’t
mustn’t
mustn’t
must
must
must