Odpowiedź:
You musn't go to the sea.
You musn't smoke.
You musn't run at school.
You musn't go with me.
I must drink water.
I must go to the toilet.
You needn't take an umbrella.
He needn't go on shopping
I needn't go to cinema.
You needn't buy new T-shirt.
I needn't have bought another bottle of juice.
You needn't worry.