Instructions: Fill in the blanks with one of the following:
must, must not, have to, don’t have to, didn’t have to, has to, could, will, can’t
1. It's getting late. I ____________ go now.
2. I _______________ talk to Ann about it.
3. She _________ go to the bank yesterday.
4. She __________________ work yesterday, so she spent the whole day in the park by the river.
5. I _______________ forget to call him today.
6. You _______ leave if you’re finished.
7. _____ I come in?
8. _______ you turn the heat up please?
9. I ____ help him.
10. _______ you come with me?