1. did young people spend their holidays in the mountains?
did young people or my grandparents spend their holidays in the mountains?
who spent his holidays in the mountains?
where did young people spend their holidays?
young people spent their holidays in the mountain, didn't they?
2. isn't my family very big?
isn't my family very big or isn't my family small?
what isn't very big?
whose family isn't very big?
my family isn't very big, is it?