You mustn't swim in the river.

You should swim here.

You must swim here.

You have to swim here.

You don't have to wear a hard hat.

You should wear a hard hat.

You must wear a hard hat.

You shouldn't wear a hard hat.

You should drink more water.

You should go for a picnic.

You should take your umbrella with you.

You should have a snack.

You should watch a horror film.

You should watch a comedy film.

You should watch a historical drama.

You should watch a disaster film.

You should look at it.

You should drink it.

You should try it.

You should n't eat it.