Here are the completed sentences:

1. Linda **shouldn't** drink alcohol: it's not good for her.
2. We **mustn't** make any noise in order not to wake the baby up.
3. You **should** eat vegetables every day.
4. Passengers **must** show passports at immigration.
5. He **mustn't** use his mobile phone at the cinema.
6. I think you **should** visit a doctor to check your health.
7. I think you **shouldn't** smoke. You cough a lot.
8. You **mustn't** smoke inside the school.
9. In many international schools, students **must** wear uniforms. It is compulsory.
10. That sign means we **must** turn left.