Use the correct forms of must and have to to complete the sentences. Sometimes more than one option is possible

1. He [ ] finish this report on time.
2. They [ ] leave the keys when they were leaving.
3. You [ ] return the books to the library in three days.
4. I [ ] call my parents and say that everything's OK.
5. Students [ ] turn their mobiles off during the lessons.
6. She [ ] tell you about my visit last week.
7. The key [ ] be somewhere here.
8. We [ ] drive not faster than 50 kilometres per hour.