Verb conjugation of "certify" in English

Great pictures. This looks very promising! At what time do you need to be back on Monday? I may have to return early on Tuesday as well, because my daughter's and my son's birthday are on the same date.
Sorry if I did not write back, I was in Napoli during the holidays, then back at work, once again I have so much to do at the weekend, but I will do my best. Greetings from Italy. Marco.
This is a fantastic idea, I am learning German just since last year. I speak, write and read well, and I will improve soon. This site, Vocabulix, I'm visiting often and I am mostly online.