Verb conjugation of "churn" 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 inquiry. Your Italian is very good. How long have you learned it? Last year I studied Spanish, which is very similar to my native Italian, but it also confuses you sometimes.
Actually, the East Coast is six hours behind CET, that means that I would speak on midnight at your 6 o'clock dinner. We should try written exercise first because of the huge time difference.