Must (not) / Should (not)

I ... take some pills if I want to feel fine.

You ... worry about the exam. You have worked really hard.

You look tired. I think you ... take a few days off.

You ... swim in that river. It's full of crocodiles.

You ... eat so much. It's not good for your health.

You ... brush your teth after every meal, if possible.

I always have a headache when I wake up. - You ... have the window open in your room.

I want to improve my English. - You ... take private lessons.

My phone bills are huge. - You ... talk so much.

I often have a stomach ache when I go to bed. - You ... eat heavy meals at night.

My job is really boring and I don't like my boss. - You ... look for more interesting job.

My flat is very untidy as I'm not often there. - You ... spend more time at home.