Task 3. Complete with must, mustn't or can't.
- You can't take photos in the museum. It's not allowed.
- We must study hard for the test tomorrow.
- Drivers must stop at a red light.
- You mustn't leave your bags here. It's dangerous.
- She can't be at the park now. I saw her at home.
- Students can't eat during the lesson.
Ответ: can't; must; must; mustn't; can't; can't.