1. In my family, all of the children have to get up before 6 a.m. and do exercises. → (obliged) 2. Students have to book in advance to use computers at the school library. → (necessary) 3. In most of the temples and pagodas in Vietnam, you have to take off your shoes when going inside the main worship areas. → (allowed) 4. To visit Ho Chi Minh Mausoleum, people must hand in their identity cards. → (obliged) 5. In Vietnam, people must drive on the right of the road. → (can’t)

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