1. We should use a _____ (词典) more often when we meet new words.
2. Miss Gao is a journalist. She has written many good _____ (文章).
3. English is the official _____ (语言) in his country.
4. What's wrong with your _____ (舌头)?
5. Paul is a shy (害羞的) boy who can't _____ (交流) very well.