CAN - POSSIBILITY
SHOULD - ADVICE
CAN - PERMISSION
MUSTN'T - PROHIBITION
CAN'T - PERMISSION
CAN - ABILITY
SHOULDN'T - ADVICE
CAN'T - IMPOSSIBLE
CAN'T - ABILITY
MUST - OBLIGATION
If your arm is broken, you must go to the hospital.
Can I phone home? I don't feel OK.
You shouldn't go for a swim after a big meal.
Penguins can't fly.
I can phone Sarah, I know her phone number.
Rafa Nadal can play tennis.
People mustn't smoke in public places.
You can't eat in class.
Students should pay attention in class.
You can't know Sue's husband. She is single.
