A.
1. their.
2. mine...hers.
3. our....yours.
b.
1. tell.
2. said.
3. telling.
I believe people in Russia usually decorate New Year trees for 5 days before the New Year.
What is your car's colour?
Where do you live?
When do Jane and Mary go to school?
When will Rodion finish the school?
Why did Kate get bad mark?