Решение:
- The amphitheatre was very popular in ancient Pompeii.
- There were shops and schools in Pompeii.
- Christopher Columbus and Vasco da Gama were famous explorers.
- There weren't any cars in ancient Pompeii. (not)
- Neil Armstrong was an American astronaut.
- The population of Rome was 2 million in AD 79. (not)
Ответ: 1. was, 2. were, 3. were, 4. weren't, 5. was, 6. was.