Szia!

You shouldn't throw garbage on the street.
You should brush your teeth well before you sleep.
Sue should stay in bed if she is still sick.
You should wear sunglasses to protect your eyes.
Kids shouldn't watch too much violent shows on TV.
Visitors should knock the door before they get in.
Friends shouldn't make funny faces to each other.
Men should be careful when using razors in shaving.
You shouldn't carry very heavy things by yourself.
People should look the police catch wanted criminals.
Classmates should help together during class work.
She should get a rest if she is tired.
People shouldn't put things when they get angry.
Girls should help their mothers in house work.
You should take a shower right away.
Drivers should wear their seat belts when they drive.
You should use sunscreen when you sunbathe.
You shouldn't cheat in tests or you'll get caught.
You shouldn't eat the food when it is still hot.
Investigators should work for evidence.