Across
- 1. Rules of how words are used in a language
- 4. A voice that can be clearly heard
- 6. A book for writing in
- 7. Marks that make up the alphabet
- 8. A group of words that makes a statement
Down
- 2. A device(设备)used to both send and receive messages
- 3. Be unable to remember
- 5. To make right