Task 2. Paraphrase the following sentences. Pay attention to the indefinite

Task 2. Paraphrase the following sentences. Pay attention to the indefinite article before nouns in the singular.

Model: He is my cousin. He is a cousin of mine.
They are our friends. They are friends of ours.
1. She is their relative.
2. He is her friend.
3. We are your former students.
4. She is his niece.
5. I am your colleague.
6. They are her children.
7. She is our neighbor.
8. He is her ex-boss.
9. I am his student.
10. Its her office.