Across
- 1. what is the busiest airport in the world?
- 4. what is country atarted ww2?
- 5. what is travel aound the world?
- 7. where is the oldest zoo?
Down
- 2. a city in northwest Germany near the benelux border
- 3. the capital of germany?
- 6. what is the cheapest transatlantic flight?