75 In my family, all of the children are obliged to get up before 6am and do exercise 76 It is necessary for students to book in advance to use computera at the school library 77 In most of the temples and pagodas in Vietnam, you are not allowed to wear your shoes when going inside the main worship areas 78 to visit Ho Chi Minh Mausoleum, people are obliged to hand in their indentity card 79 In Vietnam, people can't drive on the left of the road 80 I am very interested in the Giong festival although I have never participate in it