YOU .....................WEAR A SEAT BELT IF YOU GO BY CAR.
MUST
YOU...............USE YOUR MOBILE IN CLASS!
MUSTN'T
YOU..............BE POLITE WITH ELDERLY PEOPLE.
SHOULD
YOU..................AT YOUR PARENTS. IT IS RUDE.
SHOULDN'T .
YOU...............LEAVE THINGS FOR THE LAST MINUTE. I THINK IT IS NOT A GOOD IDEA
SHOULDN'T
YOU.................EAT SO MANY HAMBURGUERS. THEY ARE BAD FOR YOUR HEALTH.
SHOULDN'T
IF YOU FEEL TIRED, YOU ..............GO TO BED.
SHOULD
YOU..............BE PUNCTUAL FOR YOUR CLASS. IT IS OBLIGATORY.
MUST
YOU...............SPEAK ENGLISH IN DARIO'S CLASS.
MUST
YOu.............smoke on buses in most countries, including ARGENTINA
MUSTN'T