English prepositions - in and at, at the beginning, in the beginning

Engish prepositions can be a pain in the ass, sorry for my choice of words, but this is the closest deffinition possible! :) Let’s study ’IN’ and ’AT’ in the phrases ’in/at the end’ and ’in/at the beginning’. p.s. I am on vacation now in Germany. But I will try to post videos as often as possible! My channel - My group - My facebook group -