Across
- 4. – Being at a middle stage or level.
- 7. – Involving more than one country.
- 8. – A vessel that travels underwater.
- 9. – A liquid added to a car engine to stop it freezing in cold weather.
- 11. – Travelling between different cities.
Down
- 1. – A large shop where food and household items are sold.
- 2. – Relating to the space between galaxies.
- 3. – A worldwide network used to access information and communicate online.
- 5. – An underground passage or railway system.
- 6. – To fit or join together securely.
- 7. – To communicate or work with others.
- 10. – To be connected to or affect one another.