The bus stop. Points: 4x1 4 3 Mr Harmer is telling his son what he must or mustn't do. Fill in the gaps with must or mustn't. You mustn't forget to do your homework. 1 You . ... drink your milk. 2 You .. come home late. 3 You . be so noisy! 4 You .. remember to feed the rabbit. 5 You. leave your room untidy. 6 You ... wash your hands before you eat dinner. 7 You .. fight with your sister. 8 You. help your mother. 9 You visit your grandparents