Put the given verbs in the following excerpt from Primo Levi’s story, “I costruttori di ponti” (“The Bridge Builders”), in the trapassato prossimo. Be sure to watch out for direct and indirect object pronouns where they are used, taking into account how they might change the past participles. When it isn’t obvious, the correct person for each verb is provided for you.
(provare, lui), ma senza concludere nulla: (divellere, lui) dei frassini alti e diritti, li (ripiantare, lui) in terra a cerchio,