Across
- 2. a system of underground trains in a city
- 6. to respond to something with an emotion that is too strong or an action that is unnecessary
- 8. to sell (something that you bought)
- 9. not allowed by the law
Down
- 1. not well-known : not famous
- 3. to open the lock on (something)
- 4. a fictional character who has amazing powers
- 5. having mistakes or problems
- 6. to become too hot
- 7. to remember (something) from the past