working language in a sentence

Examples

1. His working languages are Arabic, English & French.
2. The working language at the IMP is English.
3. They serve as the two official working languages.
4. The working language of the course is English.
5. The enlargement of the European Union diminished the influence of other working languages ( French ).
6. The association's working languages are Khmer and English.
7. In Germany, the national postal service, Deutsche Post World Net, increasingly uses English as its working language.
8. Its working languages are English and French.
9. The two other working languages are Italian.
10. Spanish will become the third working language in April, and WIPO hopes will attract Latin American countries.