1. You won`t __have to___ make him write that letter. I`ll go it.
2. Your friends don`t ___have to__ meet me. I know the address.
3. He looks pale. He _must not spend so much time at the computer.
4. He must make some money, so he has to_ work on Sundays.
5. The text is difficult, so you should look up all the words in the dictionary.
6. Her mum was very ill, so she had to look after her.