complete with must mustn't should shouldn't

YOU...............LEAVE THINGS FOR THE LAST MINUTE. I THINK IT IS NOT A GOOD IDEA

YOU..............BE POLITE WITH ELDERLY PEOPLE.

YOU..............BE PUNCTUAL FOR YOUR CLASS. IT IS OBLIGATORY.

YOU .....................WEAR A SEAT BELT IF YOU GO BY CAR.

YOU...............USE YOUR MOBILE IN CLASS!

YOU.................EAT SO MANY HAMBURGUERS. THEY ARE BAD FOR YOUR HEALTH.

YOu.............smoke on buses in most countries, including ARGENTINA

IF YOU FEEL TIRED, YOU ..............GO TO BED.

YOU...............SPEAK ENGLISH IN DARIO'S CLASS.

YOU..................AT YOUR PARENTS. IT IS RUDE.