Relier Pairs Modal verbs. Version en ligne Match the correct modal verb with the example. par Isabel Gallego Chaves 1 MUSTN'T - prohibition 2 CAN - possibility 3 CAN - Permission (informal) 4 HAVE TO - obligation (external) 5 MAY - permission (formal) 6 MUST - obligation (personal) 7 CAN - ability 8 MAY - possibility 9 DON'T HAVE TO - no obligation 10 MUST - deduction Eddie's twin brother must be the one on the left because they look alike. Passengers have to hold their passports when passing the police control. If your car is correctly parked, you don't have to worry. You can't be on time, the bus left ten minutes ago I am busy all day but I may lend you a hand after work. Walter can check his emails when he is cooking You mustn't leave the school jumping over the fence. Passengers must check that they have their luggage. Can I make a phone call? "May I come in?" I asked the headmaster.