12.9 have to, must:affirmative, negative, interrogative 1. Wei bdont have to / mustn’t work tomorrow because it’s a public holiday. 2. You don’t have to / mustn’t touch that it will give you an electric shock. 3. We generally have to / must beat work before 09.30. 4. You have to / mustvisit this website, it’s really interesting. 5. You have to / must come and see us when you’re next in town. 6. You don’t have to / mustn’t do it now, it can wait. 7. Could you send your fax number again as I think Ii bmust / have to have the wrong number. 8. Due to family problems I am sorry to must / have toinform you that 9. I am writing to inform you that due to unforeseen circumstances, we must / have to withdraw our paper. 10. I’m sorry, but I’ll must / have to call you back in five minutes. 11. I’m really sorry but I absolutely must / have to have them by four o’clock. 12. Listen, it has been very interesting talking to you but unfortunately Ii bmust /