1 Must we tell her this news?We must not tell her this news.2 May he smoke here?He may not smoke here.3 Can she speak English perfectly?She cannot speak English perfectly. 4 Must the students translate the text at home?The students must not translate the text at home. 5 Can we go to the theater tonight? We cannot go to the theater tonight. 6 Shall we be able to help them? We shan't be able to help them.7 Did they have to wait for a long time? They didn't have to wait for a long time. 8 His friends couldn't get this book.Could his friends get this book? 9 Were you allowed to take this book at home.You weren't allowed to take this book at home?10 May I go home now?I may not go home now?11 Were they allowed to come at four?They weren't allowed to come at four.