C. Fill in the blanks with “have to, has to, don’t have to, or doesn’t have to”

1. I ________________ do my homework now. I did it already.

2. My sister ________________ write a book report. It's for her English class.

3. Ellen ________________ give her presentation tomorrow. The teacher allowed her to do it next week.

4. Stephen and Jane ________________ study for their test. They need to get good grades.

5. He ________________ work in a group for this project. He can work on his own.