Make up questions 1.this is an important holiday for us 2.her uncle fed his pet at 7 oclock yesterday

1.this is an important holiday for us.
Is this an important holiday for us
Why is this an important holiday for us
This is an important holiday for us, isnt it
Is this an important holiday for us or for them 
2.her uncle fed his pet at 7 oclock yesterday
Did her uncle feed his pet at 7 oclock yesterday
When did her uncle feed his pet
Her uncle fed his pet at 7 oclock yesterday, didnt he
Did her uncle or her father feed his pet at 7 oclock yesterday