Underline the correct option: .1 You mustn't/don't have to speed. 2. You mustn't/have to wear your seatbelt fastened when you drive. 3. You mustn't/don't have to use your mobile phone while driving. 4. You mustn't/don't have to wash your car every day before going to work, but you must/have to keep it clean! 5. fI you are fined, you don't have to/must pay the fine immediately. You have a few weeks time. 6. You must/have to stop when the traffic lights are red! 7. What ___________________ (1) do to get an English driving licence?