dialog expression promise singkat

Mother: How was your English examination?
You : hmmm.. It was a little bit hard, but I could do it.
Mother : Great! If you get A score, I will give you a pair of shoes
You : woaahh. Really?
Mother : Yeeahh. Listen, If you get A score!
You : I know, mom. I think I will get A score. You had promised to me, mum. Thank you.