Answer:
8. G ,
9. A !
10. F ,
Step-by-step explanation:
The resulting sentences would be:
8: The convertible car, which used to be a roadster, is still a favorite model.
9: In 600 B.C., sun-dried adobe housed were made from clay and straw! In the 1800s, they were made the same way.
10: Dag Hammarskjold, Secretary-General of the United Nations, served from 1953 to 1961.
I hope this helps!