Fill in each blank with a word from the box.

bilingual                   mean                     immigrants                 concentric                        fluent

1. What does this word _______ in English?

2. The Kachru's model has three _______ circles.

3. The little boy talks to his mum in Vietnamese and to his dad in English. He's _______.

4. Many children in this area are _______ English speakers, but they can't write in English.

5. The number of _______ in this country has increased quickly for the last three years.