Obligation
Fill in: must-have to-should/ought to
1. He sees very badly; he wear glasses all the time.
2. We go there at once. It is compulsory.
3. Parents protect their children.
4. Everything was ready so we (not) wait.
5. You be more careful.
6. You (buy) some bread. Why didn’t you buy?
7. I do all the typing in my office.
8. You (not) do such things.