3. Complete the sentences with the correct modal. • might • must • could • should • needn't • need • mustn't • can't • don't have to • may 1 We ... to decide who will be class president. 2 You ... do all your homework today, you can finish it tomorrow. 3 I didn't see Lyn today, she ... have taken the day off. 4 "... I leave early today, please?" Sarah asked. 5 Kate looked pale in the doctor's office. She ... be ill. 6 "... you move over a bit so I can sit down, please?" he asked.