The literary device used in the sentence is a simile. Similies use the words: like or as.
Verbs in the perfect form use a form of "have" or "had" + the past participle. I believe the answer in this case is "have+been+verb"
A pular is more than one in number. and a singular is <span>exceptionally good or great; remarkable.</span>
The second one. I just read the poem and it emphasizes the importance of the writer’s Italian heritage. Definitely! Please give me ten points.