3. All of students is going to have the final examination next week.
4. Lien and Phong have lived in this neighborhood since last summer.
5. The workers built a new bridge in this town last year.
6. Children ought to spend their free time playing sports.
7. We have not visited our grandpaprents for a long time.
8. I used to stay at the farm with my grandparents and parents HOẶC I used to stay at the farm of my grandparents' parents.