2)Gabby/decorate the tree?Yes
Is Gabby decorating the tree?
Yes, she is.
3)they/walk in a parade?No/carry a Christmas tree.
Are they walking in a parade?
No, they aren't. They are carrying a Christmas tree.
4)boy/wear costume No/wear party hat.
Is the boy wearing a costume?
No, he isn't. He is wearing a hat.
5)tey/dance?Yes,
Are they dancing?
Yes, they are.