Most memorable learning experience

My most memorable learning experience is not very pleasant one. It happened in my first year in senior high. It was in English class and our English teacher Justiina was asking how to bend some irregular verbs. My verb was to begin. I knew how it was bent: begin, began begun but I didn’t pronounce it correctly. I said it more like it is written. Justiina said that the pronunciation was incorrect and asked a student next to me pronounce it right and after that the whole class pronounced it together. Then it was my turn again to pronounce it. I couldn’t say it correctly and the student next to me and the whole class after that pronounced it again. It was my turn again and I still couldn’t say it correctly. The same pattern was repeated maybe five times before the right pronunciation came out of my mouth. That was humiliating and distressing but it worked. I still remember it clearly after more than ten years and I can also pronounce that verb quite well.