When doing a research paper do you have to cite every sentence?

This poem describes a train as if it were a horse. what literacy device does the poet use in this poem?

Which best describes the tone in these lines "the fish"

What does the excerpt tell about the narratos mental shift i suppose i shall have to get back behind the pattern when it comes night,and that is hard? @a.the narraor believes that the wallpaper is beatiful b.he believes that the woman in the wallpaper will attack him when he sleeps c.the narrator believes that he cant escape from the windws with the bars d.that the narrator was once behind the wallpaper