Answer:
1. Arches were very important for building aqueducts.
2. Caesar claimed to have turned Rome into a city of marble, because his last words were: “I found Rome of clay; I leave it to you of marble.”
3. Caesar built the Roman Forum as a large complex of government and public buildings, because this is one of the most renowned ancient wonders of the world.
4. The Pantheon in Rome features a large, rounded roof or ceiling known as a dome, since a rounded ceiling is known as a dome.
