Type the requested verb form of the underlined verb in the tense indicated, then press Enter.
past tense
The Dobbs file a complaint with the main office, and a vice president has offered to personally investigate the problem.
Since we don't know which verb is underlined, I will just write the sentence with all verbs in past tense. The Dobbs filed a complaint with the main office, and a vice president offered to personally investigate the problem.
