Ответ:

1. How many cousins have you got? — I have got 2 cousins.

2. How many grandparents have you got? — I have got 4 grandparents.

3. How many desks has your classroom got? — My classroom has got 1 desk.

4. How many regions has Russia got? — Russia has got 85 regions.

5. How many students has your class got? — My class has got 26 students.