4. Read the sentences. Answer the question. a) You have to take off your shoes when you enter someone's house. We have to eat or offer food with our right hand. b) You don't have to eat with your right hand. You don't have to follow this custom. c) Do I have to shake hands when I meet your father and brother? Do I have to bring a present? Which of the highlighted words mean?: 1) It's not necessary ... 2) Is it necessary ...? 3) It's necessary ... .
