They will not set essays that can't be answered. Read through what you have gathered and you will see what teachers and exam writers think is important about a text, what is examinable. Tasks are carefully phrased so that each carries the very answer you are after. A key word or phrase will signal what you should include in your analysis and what exactly you should express a point of view on. Find these and, at the very least, what you write will be relevant to the question.
Oral presentations are a nightmare for many students.
People who are excessively nervous and self-conscious can weaken their presentation in a number of ways. They bury their faces in their chests and, hiding behind their notes, fail to field questions and lead discussion. Speaking with muffled, barely audible voices they lose their audience's attention. Some will write out their entire presentation and speed-read in the hope of getting back to their seat as soon as possible. Others are so spooked by the whole exercise they spend days worrying rather than researching content and rehearsing.