Relacionar Columnas Modal verbsVersión en línea Small activity to practice modals for obligation por Adamaris Dominguez 1 It's essential she exercises every day. 2 Taking vitamins isn't essential. 3 It's essential that he loses weight. 4 Running isn't allowed until your leg is better. 5 Wearing a helmet is essential 6 Eating too much sugar isn't allowed. You mustn't eat too much sugar. Everyone must wear a helmet. You must not run while your leg is healing. He has to lose weight. She has to exercise every day. I don't have to take vitamins.