MODAL VERB OF OBLIGATION
Complete the sentence: "You ____________ climb up the volcano today; there's smoke near the top."
shouldn't / mustn't / can’t / are not allowed to
Complete the sentence: "If you want to work at a construction site, you ___________ wear a hat and gloves."
must / have to / need to
Complete the sentence: "You __________ get water from that tap. It's not safe to drink!"
shouldn’t / mustn't / can't