The rhetorical device you would use to create a feeling of unity between yourself and your audience is first-person plural mode of address.
Using the pronoun <em>we </em>will include both yourself and your audience and create a sense of oneness, so to say. You are all united, which makes your readers feel closer to you as the author.
The subject of the sentence: <em>Children and adults.....</em>
Simple predicate<em>: prepare ....for the holiday....</em>
Complete predicate of the sentence: ....<em>prepare for the holiday by decorating their homes with symbols of springtime.</em>
The Black cat is a short story of a cat that everyone in its village hates it because black cat were known as bad luck but one day the black was chased out of the village by villagers and end up in the woods and the black cat found a little cottage were a young little witch lives alone the cat didn't want to bring her any bad luck but a winter storm blow in and the cat had no choice but to turn back towards the witches cabin the young witch found the cat in the middle of the woods unconscious she decides to take him home with her and take good care of him
