So basically you need to go through and analyze the poems. The first two rows on "nothing gold can stay" are already filled out to help you with the next ones. Repetition as the sample answer says may mean that the first letter is repeated or a specific word. You can also think of personification like this - anything that's not alive (e.g. a rock, flower) but given emotion or thought. You can find something symbolic by thinking of the underlying meaning. Hope this helps.