2 Choose the correct verbs. 1 You need to / needn't finish your homework, then you can relax. 2 You have to / needn't tell the teacher today if you want to go on the school trip. 3 You shouldn't / should clean your teeth before you go to the dentist. 4 You don't have to / need to walk to school - I can give you a lift. 5 You needn't / should buy a drink - I've already got one for you. 6 You should / needn't pack your bag the night before you leave, so that you'll be ready when the taxi arrives. 7 You needn't / shouldn't forget to switch all the lights off before you leave. 8 I don't need to / shouldn't take a passport with me because I'm not flying to a different country.