Verb conjugation of "classify" in English

Work was performed only in June, July, August and September. In October and November, Erik has been waiting for Katja's visit and Sabine was on maternal leave after Christmas and New Year.
Thank you for your answer. Your correction in Russian has helped me. I'm glad to have found a Russian Vocabulix friend with Russian as the mother tongue. I will help you in Spanish, OK?
I live in the center of Rome, but I prefer the outskirts. I don't love the center but the old part of the city is very charming. There are however a lot of advantages in the city, especially for young people.