1 You mustn't hurt children
2 You mustn't stay/be here
3 You mustn't feed animals in the zoo
4 We can't/mustn't use the phone on private business
5 One shouldn't interrupt each other during the discussion
6 You musn't show him that you feel sorry for him
7 You musn't/shouldn't contradict him, you must respect his age
8 She shouldn't have missed the seminar
9 "You mustn't argue with older people" said Mother
10 You shouldn't have interfered in their affairs. You have spoilt everything